25647080

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{991}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 57853440

約数和(自身を除く): 32206360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 991, 1294, 1982, 2588, 3235, 3964, 4955, 5176, 6470, 7928, 9910, 12940, 19820, 25880, 39640, 641177, 1282354, 2564708, 3205885, 5129416, 6411770, 12823540, 25647080]

約数ペア:

[(1, 25647080), (2, 12823540), (4, 6411770), (5, 5129416), (8, 3205885), (10, 2564708), (20, 1282354), (40, 641177), (647, 39640), (991, 25880), (1294, 19820), (1982, 12940), (2588, 9910), (3235, 7928), (3964, 6470), (4955, 5176)]