20279375

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:548

約数の個数: 20

約数和(自身を含む): 25754256

約数和(自身を除く): 5474881

約数列:

[1, 5, 25, 71, 125, 355, 457, 625, 1775, 2285, 8875, 11425, 32447, 44375, 57125, 162235, 285625, 811175, 4055875, 20279375]

約数ペア:

[(1, 20279375), (5, 4055875), (25, 811175), (71, 285625), (125, 162235), (355, 57125), (457, 44375), (625, 32447), (1775, 11425), (2285, 8875)]