18278870

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42509}}^1$

素因数の和:42559

約数の個数: 16

約数和(自身を含む): 33667920

約数和(自身を除く): 15389050

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 42509, 85018, 212545, 425090, 1827887, 3655774, 9139435, 18278870]

約数ペア:

[(1, 18278870), (2, 9139435), (5, 3655774), (10, 1827887), (43, 425090), (86, 212545), (215, 85018), (430, 42509)]