20941750

素因数分解:

$2^1\times 5^3\times {\mathrm{211}}^1\times {\mathrm{397}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 39487968

約数和(自身を除く): 18546218

約数列:

[1, 2, 5, 10, 25, 50, 125, 211, 250, 397, 422, 794, 1055, 1985, 2110, 3970, 5275, 9925, 10550, 19850, 26375, 49625, 52750, 83767, 99250, 167534, 418835, 837670, 2094175, 4188350, 10470875, 20941750]

約数ペア:

[(1, 20941750), (2, 10470875), (5, 4188350), (10, 2094175), (25, 837670), (50, 418835), (125, 167534), (211, 99250), (250, 83767), (397, 52750), (422, 49625), (794, 26375), (1055, 19850), (1985, 10550), (2110, 9925), (3970, 5275)]