21244925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{499}}^1$

素因数の和:653

約数の個数: 24

約数和(自身を含む): 28644000

約数和(自身を除く): 7399075

約数列:

[1, 5, 13, 25, 65, 131, 325, 499, 655, 1703, 2495, 3275, 6487, 8515, 12475, 32435, 42575, 65369, 162175, 326845, 849797, 1634225, 4248985, 21244925]

約数ペア:

[(1, 21244925), (5, 4248985), (13, 1634225), (25, 849797), (65, 326845), (131, 162175), (325, 65369), (499, 42575), (655, 32435), (1703, 12475), (2495, 8515), (3275, 6487)]