20692820

素因数分解:

$2^2\times 5^1\times {\mathrm{719}}^1\times {\mathrm{1439}}^1$

素因数の和:2167

約数の個数: 24

約数和(自身を含む): 43545600

約数和(自身を除く): 22852780

約数列:

[1, 2, 4, 5, 10, 20, 719, 1438, 1439, 2876, 2878, 3595, 5756, 7190, 7195, 14380, 14390, 28780, 1034641, 2069282, 4138564, 5173205, 10346410, 20692820]

約数ペア:

[(1, 20692820), (2, 10346410), (4, 5173205), (5, 4138564), (10, 2069282), (20, 1034641), (719, 28780), (1438, 14390), (1439, 14380), (2876, 7195), (2878, 7190), (3595, 5756)]