21342285

素因数分解:

$3^4\times 5^1\times {\mathrm{52697}}^1$

素因数の和:52714

約数の個数: 20

約数和(自身を含む): 38258748

約数和(自身を除く): 16916463

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 52697, 158091, 263485, 474273, 790455, 1422819, 2371365, 4268457, 7114095, 21342285]

約数ペア:

[(1, 21342285), (3, 7114095), (5, 4268457), (9, 2371365), (15, 1422819), (27, 790455), (45, 474273), (81, 263485), (135, 158091), (405, 52697)]