21018105

素因数分解:

$3^2\times 5^1\times {\mathrm{617}}^1\times {\mathrm{757}}^1$

素因数の和:1385

約数の個数: 24

約数和(自身を含む): 36538632

約数和(自身を除く): 15520527

約数列:

[1, 3, 5, 9, 15, 45, 617, 757, 1851, 2271, 3085, 3785, 5553, 6813, 9255, 11355, 27765, 34065, 467069, 1401207, 2335345, 4203621, 7006035, 21018105]

約数ペア:

[(1, 21018105), (3, 7006035), (5, 4203621), (9, 2335345), (15, 1401207), (45, 467069), (617, 34065), (757, 27765), (1851, 11355), (2271, 9255), (3085, 6813), (3785, 5553)]