25990120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{331}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 63584640

約数和(自身を除く): 37594520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 151, 260, 302, 331, 520, 604, 662, 755, 1208, 1324, 1510, 1655, 1963, 2648, 3020, 3310, 3926, 4303, 6040, 6620, 7852, 8606, 9815, 13240, 15704, 17212, 19630, 21515, 34424, 39260, 43030, 49981, 78520, 86060, 99962, 172120, 199924, 249905, 399848, 499810, 649753, 999620, 1299506, 1999240, 2599012, 3248765, 5198024, 6497530, 12995060, 25990120]

約数ペア:

[(1, 25990120), (2, 12995060), (4, 6497530), (5, 5198024), (8, 3248765), (10, 2599012), (13, 1999240), (20, 1299506), (26, 999620), (40, 649753), (52, 499810), (65, 399848), (104, 249905), (130, 199924), (151, 172120), (260, 99962), (302, 86060), (331, 78520), (520, 49981), (604, 43030), (662, 39260), (755, 34424), (1208, 21515), (1324, 19630), (1510, 17212), (1655, 15704), (1963, 13240), (2648, 9815), (3020, 8606), (3310, 7852), (3926, 6620), (4303, 6040)]