2020009940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1201}}^1\times {\mathrm{6469}}^1$

素因数の和:7692

約数の個数: 48

約数和(自身を含む): 4572840720

約数和(自身を除く): 2552830780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1201, 2402, 4804, 6005, 6469, 12010, 12938, 15613, 24020, 25876, 31226, 32345, 62452, 64690, 78065, 84097, 129380, 156130, 168194, 312260, 336388, 420485, 840970, 1681940, 7769269, 15538538, 31077076, 38846345, 77692690, 101000497, 155385380, 202000994, 404001988, 505002485, 1010004970, 2020009940]

約数ペア:

[(1, 2020009940), (2, 1010004970), (4, 505002485), (5, 404001988), (10, 202000994), (13, 155385380), (20, 101000497), (26, 77692690), (52, 38846345), (65, 31077076), (130, 15538538), (260, 7769269), (1201, 1681940), (2402, 840970), (4804, 420485), (6005, 336388), (6469, 312260), (12010, 168194), (12938, 156130), (15613, 129380), (24020, 84097), (25876, 78065), (31226, 64690), (32345, 62452)]