90708220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{499}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 195300000

約数和(自身を除く): 104591780

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 149, 244, 298, 305, 499, 596, 610, 745, 998, 1220, 1490, 1996, 2495, 2980, 4990, 9089, 9980, 18178, 30439, 36356, 45445, 60878, 74351, 90890, 121756, 148702, 152195, 181780, 297404, 304390, 371755, 608780, 743510, 1487020, 4535411, 9070822, 18141644, 22677055, 45354110, 90708220]

約数ペア:

[(1, 90708220), (2, 45354110), (4, 22677055), (5, 18141644), (10, 9070822), (20, 4535411), (61, 1487020), (122, 743510), (149, 608780), (244, 371755), (298, 304390), (305, 297404), (499, 181780), (596, 152195), (610, 148702), (745, 121756), (998, 90890), (1220, 74351), (1490, 60878), (1996, 45445), (2495, 36356), (2980, 30439), (4990, 18178), (9089, 9980)]