64721875

素因数分解:

$5^5\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:313

約数の個数: 24

約数和(自身を含む): 82026000

約数和(自身を除く): 17304125

約数列:

[1, 5, 25, 125, 139, 149, 625, 695, 745, 3125, 3475, 3725, 17375, 18625, 20711, 86875, 93125, 103555, 434375, 465625, 517775, 2588875, 12944375, 64721875]

約数ペア:

[(1, 64721875), (5, 12944375), (25, 2588875), (125, 517775), (139, 465625), (149, 434375), (625, 103555), (695, 93125), (745, 86875), (3125, 20711), (3475, 18625), (3725, 17375)]