64840750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:382

約数の個数: 64

約数和(自身を含む): 133031808

約数和(自身を除く): 68191058

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 71, 125, 130, 142, 250, 281, 325, 355, 562, 650, 710, 923, 1405, 1625, 1775, 1846, 2810, 3250, 3550, 3653, 4615, 7025, 7306, 8875, 9230, 14050, 17750, 18265, 19951, 23075, 35125, 36530, 39902, 46150, 70250, 91325, 99755, 115375, 182650, 199510, 230750, 259363, 456625, 498775, 518726, 913250, 997550, 1296815, 2493875, 2593630, 4987750, 6484075, 12968150, 32420375, 64840750]

約数ペア:

[(1, 64840750), (2, 32420375), (5, 12968150), (10, 6484075), (13, 4987750), (25, 2593630), (26, 2493875), (50, 1296815), (65, 997550), (71, 913250), (125, 518726), (130, 498775), (142, 456625), (250, 259363), (281, 230750), (325, 199510), (355, 182650), (562, 115375), (650, 99755), (710, 91325), (923, 70250), (1405, 46150), (1625, 39902), (1775, 36530), (1846, 35125), (2810, 23075), (3250, 19951), (3550, 18265), (3653, 17750), (4615, 14050), (7025, 9230), (7306, 8875)]