19409960

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3491}}^1$

素因数の和:3641

約数の個数: 32

約数和(自身を含む): 43999200

約数和(自身を除く): 24589240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3491, 5560, 6982, 13964, 17455, 27928, 34910, 69820, 139640, 485249, 970498, 1940996, 2426245, 3881992, 4852490, 9704980, 19409960]

約数ペア:

[(1, 19409960), (2, 9704980), (4, 4852490), (5, 3881992), (8, 2426245), (10, 1940996), (20, 970498), (40, 485249), (139, 139640), (278, 69820), (556, 34910), (695, 27928), (1112, 17455), (1390, 13964), (2780, 6982), (3491, 5560)]