How many investors does this paragraph mention? list them as a numbered list: 

Several venture funds and prominent entrepreneurs have backed our vision of an open ecosystem for AI and invested along with our leads in this funding round, including Factory, SV Angel, First Round Capital, Long Journey Ventures, A Capital, Robot Ventures, Common Metal, Definition Capital, Susa Ventures, Cadenza Ventures, SCB 10x, NAME_1, the co-founder of PayPal; NAME_2, the co-founder of Cloudera; NAME_3, the co-founder of NAME_4, NAME_5, the co-founder of OpenSea; NAME_6, the COO of Uniswap, Lip-Bu NAME_7, the founder of Cadence Systems; NAME_8, the co-inventor of the Transformer architecture, as well as angel investors NAME_9, NAME_10, NAME_11, NAME_12, NAME_13, NAME_14, NAME_15, NAME_16, and NAME_17.