408933020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{4721}}^1$

素因数の和:4862

約数の個数: 48

約数和(自身を含む): 885318336

約数和(自身を除く): 476385316

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 244, 284, 305, 355, 610, 710, 1220, 1420, 4331, 4721, 8662, 9442, 17324, 18884, 21655, 23605, 43310, 47210, 86620, 94420, 287981, 335191, 575962, 670382, 1151924, 1340764, 1439905, 1675955, 2879810, 3351910, 5759620, 6703820, 20446651, 40893302, 81786604, 102233255, 204466510, 408933020]

約数ペア:

[(1, 408933020), (2, 204466510), (4, 102233255), (5, 81786604), (10, 40893302), (20, 20446651), (61, 6703820), (71, 5759620), (122, 3351910), (142, 2879810), (244, 1675955), (284, 1439905), (305, 1340764), (355, 1151924), (610, 670382), (710, 575962), (1220, 335191), (1420, 287981), (4331, 94420), (4721, 86620), (8662, 47210), (9442, 43310), (17324, 23605), (18884, 21655)]