18880060

素因数分解:

$2^2\times 5^1\times {\mathrm{944003}}^1$

素因数の和:944012

約数の個数: 12

約数和(自身を含む): 39648168

約数和(自身を除く): 20768108

約数列:

[1, 2, 4, 5, 10, 20, 944003, 1888006, 3776012, 4720015, 9440030, 18880060]

約数ペア:

[(1, 18880060), (2, 9440030), (4, 4720015), (5, 3776012), (10, 1888006), (20, 944003)]