40648400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7817}}^1$

素因数の和:7848

約数の個数: 60

約数和(自身を含む): 105183372

約数和(自身を除く): 64534972

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 7817, 15634, 31268, 39085, 62536, 78170, 101621, 125072, 156340, 195425, 203242, 312680, 390850, 406484, 508105, 625360, 781700, 812968, 1016210, 1563400, 1625936, 2032420, 2540525, 3126800, 4064840, 5081050, 8129680, 10162100, 20324200, 40648400]

約数ペア:

[(1, 40648400), (2, 20324200), (4, 10162100), (5, 8129680), (8, 5081050), (10, 4064840), (13, 3126800), (16, 2540525), (20, 2032420), (25, 1625936), (26, 1563400), (40, 1016210), (50, 812968), (52, 781700), (65, 625360), (80, 508105), (100, 406484), (104, 390850), (130, 312680), (200, 203242), (208, 195425), (260, 156340), (325, 125072), (400, 101621), (520, 78170), (650, 62536), (1040, 39085), (1300, 31268), (2600, 15634), (5200, 7817)]