20020180

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12671}}^1$

素因数の和:12759

約数の個数: 24

約数和(自身を含む): 42577920

約数和(自身を除く): 22557740

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12671, 25342, 50684, 63355, 126710, 253420, 1001009, 2002018, 4004036, 5005045, 10010090, 20020180]

約数ペア:

[(1, 20020180), (2, 10010090), (4, 5005045), (5, 4004036), (10, 2002018), (20, 1001009), (79, 253420), (158, 126710), (316, 63355), (395, 50684), (790, 25342), (1580, 12671)]