21615723

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{373}}^1$

素因数の和:563

約数の個数: 24

約数和(自身を含む): 32205888

約数和(自身を除く): 10590165

約数列:

[1, 3, 9, 47, 137, 141, 373, 411, 423, 1119, 1233, 3357, 6439, 17531, 19317, 51101, 52593, 57951, 153303, 157779, 459909, 2401747, 7205241, 21615723]

約数ペア:

[(1, 21615723), (3, 7205241), (9, 2401747), (47, 459909), (137, 157779), (141, 153303), (373, 57951), (411, 52593), (423, 51101), (1119, 19317), (1233, 17531), (3357, 6439)]