249569420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1\times {\mathrm{557}}^1$

素因数の和:1130

約数の個数: 48

約数和(自身を含む): 538278048

約数和(自身を除く): 288708628

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 521, 557, 860, 1042, 1114, 2084, 2228, 2605, 2785, 5210, 5570, 10420, 11140, 22403, 23951, 44806, 47902, 89612, 95804, 112015, 119755, 224030, 239510, 290197, 448060, 479020, 580394, 1160788, 1450985, 2901970, 5803940, 12478471, 24956942, 49913884, 62392355, 124784710, 249569420]

約数ペア:

[(1, 249569420), (2, 124784710), (4, 62392355), (5, 49913884), (10, 24956942), (20, 12478471), (43, 5803940), (86, 2901970), (172, 1450985), (215, 1160788), (430, 580394), (521, 479020), (557, 448060), (860, 290197), (1042, 239510), (1114, 224030), (2084, 119755), (2228, 112015), (2605, 95804), (2785, 89612), (5210, 47902), (5570, 44806), (10420, 23951), (11140, 22403)]