81820475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{2633}}^1$

素因数の和:2767

約数の個数: 24

約数和(自身を含む): 111702672

約数和(自身を除く): 29882197

約数列:

[1, 5, 11, 25, 55, 113, 275, 565, 1243, 2633, 2825, 6215, 13165, 28963, 31075, 65825, 144815, 297529, 724075, 1487645, 3272819, 7438225, 16364095, 81820475]

約数ペア:

[(1, 81820475), (5, 16364095), (11, 7438225), (25, 3272819), (55, 1487645), (113, 724075), (275, 297529), (565, 144815), (1243, 65825), (2633, 31075), (2825, 28963), (6215, 13165)]