639153840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{204857}}^1$

素因数の和:204886

約数の個数: 80

約数和(自身を含む): 2133800928

約数和(自身を除く): 1494647088

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 204857, 409714, 614571, 819428, 1024285, 1229142, 1638856, 2048570, 2458284, 2663141, 3072855, 3277712, 4097140, 4916568, 5326282, 6145710, 7989423, 8194280, 9833136, 10652564, 12291420, 13315705, 15978846, 16388560, 21305128, 24582840, 26631410, 31957692, 39947115, 42610256, 49165680, 53262820, 63915384, 79894230, 106525640, 127830768, 159788460, 213051280, 319576920, 639153840]

約数ペア:

[(1, 639153840), (2, 319576920), (3, 213051280), (4, 159788460), (5, 127830768), (6, 106525640), (8, 79894230), (10, 63915384), (12, 53262820), (13, 49165680), (15, 42610256), (16, 39947115), (20, 31957692), (24, 26631410), (26, 24582840), (30, 21305128), (39, 16388560), (40, 15978846), (48, 13315705), (52, 12291420), (60, 10652564), (65, 9833136), (78, 8194280), (80, 7989423), (104, 6145710), (120, 5326282), (130, 4916568), (156, 4097140), (195, 3277712), (208, 3072855), (240, 2663141), (260, 2458284), (312, 2048570), (390, 1638856), (520, 1229142), (624, 1024285), (780, 819428), (1040, 614571), (1560, 409714), (3120, 204857)]