18884540

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6793}}^1$

素因数の和:6941

約数の個数: 24

約数和(自身を含む): 39948720

約数和(自身を除く): 21064180

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 6793, 13586, 27172, 33965, 67930, 135860, 944227, 1888454, 3776908, 4721135, 9442270, 18884540]

約数ペア:

[(1, 18884540), (2, 9442270), (4, 4721135), (5, 3776908), (10, 1888454), (20, 944227), (139, 135860), (278, 67930), (556, 33965), (695, 27172), (1390, 13586), (2780, 6793)]