205480215

素因数分解:

$3^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{18947}}^1$

素因数の和:19199

約数の個数: 24

約数和(自身を含む): 357662448

約数和(自身を除く): 152182233

約数列:

[1, 3, 5, 9, 15, 45, 241, 723, 1205, 2169, 3615, 10845, 18947, 56841, 94735, 170523, 284205, 852615, 4566227, 13698681, 22831135, 41096043, 68493405, 205480215]

約数ペア:

[(1, 205480215), (3, 68493405), (5, 41096043), (9, 22831135), (15, 13698681), (45, 4566227), (241, 852615), (723, 284205), (1205, 170523), (2169, 94735), (3615, 56841), (10845, 18947)]