28407925

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12487}}^1$

素因数の和:12517

約数の個数: 24

約数和(自身を含む): 43358336

約数和(自身を除く): 14950411

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 12487, 62435, 87409, 162331, 312175, 437045, 811655, 1136317, 2185225, 4058275, 5681585, 28407925]

約数ペア:

[(1, 28407925), (5, 5681585), (7, 4058275), (13, 2185225), (25, 1136317), (35, 811655), (65, 437045), (91, 312175), (175, 162331), (325, 87409), (455, 62435), (2275, 12487)]