18121995

素因数分解:

$3^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{557}}^1$

素因数の和:812

約数の個数: 32

約数和(自身を含む): 32408640

約数和(自身を除く): 14286645

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 241, 557, 723, 1205, 1671, 2169, 2785, 3615, 5013, 6507, 8355, 10845, 15039, 25065, 32535, 75195, 134237, 402711, 671185, 1208133, 2013555, 3624399, 6040665, 18121995]

約数ペア:

[(1, 18121995), (3, 6040665), (5, 3624399), (9, 2013555), (15, 1208133), (27, 671185), (45, 402711), (135, 134237), (241, 75195), (557, 32535), (723, 25065), (1205, 15039), (1671, 10845), (2169, 8355), (2785, 6507), (3615, 5013)]