28142075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{661}}^1$

素因数の和:815

約数の個数: 24

約数和(自身を含む): 37924656

約数和(自身を除く): 9782581

約数列:

[1, 5, 13, 25, 65, 131, 325, 655, 661, 1703, 3275, 3305, 8515, 8593, 16525, 42575, 42965, 86591, 214825, 432955, 1125683, 2164775, 5628415, 28142075]

約数ペア:

[(1, 28142075), (5, 5628415), (13, 2164775), (25, 1125683), (65, 432955), (131, 214825), (325, 86591), (655, 42965), (661, 42575), (1703, 16525), (3275, 8593), (3305, 8515)]