12921025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{479}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 17498880

約数和(自身を除く): 4577855

約数列:

[1, 5, 13, 25, 65, 83, 325, 415, 479, 1079, 2075, 2395, 5395, 6227, 11975, 26975, 31135, 39757, 155675, 198785, 516841, 993925, 2584205, 12921025]

約数ペア:

[(1, 12921025), (5, 2584205), (13, 993925), (25, 516841), (65, 198785), (83, 155675), (325, 39757), (415, 31135), (479, 26975), (1079, 11975), (2075, 6227), (2395, 5395)]