221618125

素因数分解:

$5^4\times {\mathrm{139}}^1\times {\mathrm{2551}}^1$

素因数の和:2710

約数の個数: 20

約数和(自身を含む): 279035680

約数和(自身を除く): 57417555

約数列:

[1, 5, 25, 125, 139, 625, 695, 2551, 3475, 12755, 17375, 63775, 86875, 318875, 354589, 1594375, 1772945, 8864725, 44323625, 221618125]

約数ペア:

[(1, 221618125), (5, 44323625), (25, 8864725), (125, 1772945), (139, 1594375), (625, 354589), (695, 318875), (2551, 86875), (3475, 63775), (12755, 17375)]