20408950

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5749}}^1$

素因数の和:5832

約数の個数: 24

約数和(自身を含む): 38502000

約数和(自身を除く): 18093050

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 5749, 11498, 28745, 57490, 143725, 287450, 408179, 816358, 2040895, 4081790, 10204475, 20408950]

約数ペア:

[(1, 20408950), (2, 10204475), (5, 4081790), (10, 2040895), (25, 816358), (50, 408179), (71, 287450), (142, 143725), (355, 57490), (710, 28745), (1775, 11498), (3550, 5749)]