82780625

素因数分解:

$5^4\times {\mathrm{19}}^1\times {\mathrm{6971}}^1$

素因数の和:7010

約数の個数: 20

約数和(自身を含む): 108902640

約数和(自身を除く): 26122015

約数列:

[1, 5, 19, 25, 95, 125, 475, 625, 2375, 6971, 11875, 34855, 132449, 174275, 662245, 871375, 3311225, 4356875, 16556125, 82780625]

約数ペア:

[(1, 82780625), (5, 16556125), (19, 4356875), (25, 3311225), (95, 871375), (125, 662245), (475, 174275), (625, 132449), (2375, 34855), (6971, 11875)]