405393025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{16103}}^1$

素因数の和:16185

約数の個数: 24

約数和(自身を含む): 539161920

約数和(自身を除く): 133768895

約数列:

[1, 5, 19, 25, 53, 95, 265, 475, 1007, 1325, 5035, 16103, 25175, 80515, 305957, 402575, 853459, 1529785, 4267295, 7648925, 16215721, 21336475, 81078605, 405393025]

約数ペア:

[(1, 405393025), (5, 81078605), (19, 21336475), (25, 16215721), (53, 7648925), (95, 4267295), (265, 1529785), (475, 853459), (1007, 402575), (1325, 305957), (5035, 80515), (16103, 25175)]