18080780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47581}}^1$

素因数の和:47609

約数の個数: 24

約数和(自身を含む): 39968880

約数和(自身を除く): 21888100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 47581, 95162, 190324, 237905, 475810, 904039, 951620, 1808078, 3616156, 4520195, 9040390, 18080780]

約数ペア:

[(1, 18080780), (2, 9040390), (4, 4520195), (5, 3616156), (10, 1808078), (19, 951620), (20, 904039), (38, 475810), (76, 237905), (95, 190324), (190, 95162), (380, 47581)]