18909860

素因数分解:

$2^2\times 5^1\times {\mathrm{757}}^1\times {\mathrm{1249}}^1$

素因数の和:2015

約数の個数: 24

約数和(自身を含む): 39795000

約数和(自身を除く): 20885140

約数列:

[1, 2, 4, 5, 10, 20, 757, 1249, 1514, 2498, 3028, 3785, 4996, 6245, 7570, 12490, 15140, 24980, 945493, 1890986, 3781972, 4727465, 9454930, 18909860]

約数ペア:

[(1, 18909860), (2, 9454930), (4, 4727465), (5, 3781972), (10, 1890986), (20, 945493), (757, 24980), (1249, 15140), (1514, 12490), (2498, 7570), (3028, 6245), (3785, 4996)]