20117620

素因数分解:

$2^2\times 5^1\times {\mathrm{719}}^1\times {\mathrm{1399}}^1$

素因数の和:2127

約数の個数: 24

約数和(自身を含む): 42336000

約数和(自身を除く): 22218380

約数列:

[1, 2, 4, 5, 10, 20, 719, 1399, 1438, 2798, 2876, 3595, 5596, 6995, 7190, 13990, 14380, 27980, 1005881, 2011762, 4023524, 5029405, 10058810, 20117620]

約数ペア:

[(1, 20117620), (2, 10058810), (4, 5029405), (5, 4023524), (10, 2011762), (20, 1005881), (719, 27980), (1399, 14380), (1438, 13990), (2798, 7190), (2876, 6995), (3595, 5596)]