21931025

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 28161144

約数和(自身を除く): 6230119

約数列:

[1, 5, 25, 61, 73, 197, 305, 365, 985, 1525, 1825, 4453, 4925, 12017, 14381, 22265, 60085, 71905, 111325, 300425, 359525, 877241, 4386205, 21931025]

約数ペア:

[(1, 21931025), (5, 4386205), (25, 877241), (61, 359525), (73, 300425), (197, 111325), (305, 71905), (365, 60085), (985, 22265), (1525, 14381), (1825, 12017), (4453, 4925)]