67638125

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{3491}}^1$

素因数の和:3542

約数の個数: 20

約数和(自身を含む): 87272064

約数和(自身を除く): 19633939

約数列:

[1, 5, 25, 31, 125, 155, 625, 775, 3491, 3875, 17455, 19375, 87275, 108221, 436375, 541105, 2181875, 2705525, 13527625, 67638125]

約数ペア:

[(1, 67638125), (5, 13527625), (25, 2705525), (31, 2181875), (125, 541105), (155, 436375), (625, 108221), (775, 87275), (3491, 19375), (3875, 17455)]