19854760

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3571}}^1$

素因数の和:3721

約数の個数: 32

約数和(自身を含む): 45007200

約数和(自身を除く): 25152440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3571, 5560, 7142, 14284, 17855, 28568, 35710, 71420, 142840, 496369, 992738, 1985476, 2481845, 3970952, 4963690, 9927380, 19854760]

約数ペア:

[(1, 19854760), (2, 9927380), (4, 4963690), (5, 3970952), (8, 2481845), (10, 1985476), (20, 992738), (40, 496369), (139, 142840), (278, 71420), (556, 35710), (695, 28568), (1112, 17855), (1390, 14284), (2780, 7142), (3571, 5560)]