20967960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13441}}^1$

素因数の和:13468

約数の個数: 64

約数和(自身を含む): 67747680

約数和(自身を除く): 46779720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13441, 26882, 40323, 53764, 67205, 80646, 107528, 134410, 161292, 174733, 201615, 268820, 322584, 349466, 403230, 524199, 537640, 698932, 806460, 873665, 1048398, 1397864, 1612920, 1747330, 2096796, 2620995, 3494660, 4193592, 5241990, 6989320, 10483980, 20967960]

約数ペア:

[(1, 20967960), (2, 10483980), (3, 6989320), (4, 5241990), (5, 4193592), (6, 3494660), (8, 2620995), (10, 2096796), (12, 1747330), (13, 1612920), (15, 1397864), (20, 1048398), (24, 873665), (26, 806460), (30, 698932), (39, 537640), (40, 524199), (52, 403230), (60, 349466), (65, 322584), (78, 268820), (104, 201615), (120, 174733), (130, 161292), (156, 134410), (195, 107528), (260, 80646), (312, 67205), (390, 53764), (520, 40323), (780, 26882), (1560, 13441)]