20557155

素因数分解:

$3^1\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1511}}^1$

素因数の和:2426

約数の個数: 16

約数和(自身を含む): 32949504

約数和(自身を除く): 12392349

約数列:

[1, 3, 5, 15, 907, 1511, 2721, 4533, 4535, 7555, 13605, 22665, 1370477, 4111431, 6852385, 20557155]

約数ペア:

[(1, 20557155), (3, 6852385), (5, 4111431), (15, 1370477), (907, 22665), (1511, 13605), (2721, 7555), (4533, 4535)]