64864375

素因数分解:

$5^4\times {\mathrm{67}}^1\times {\mathrm{1549}}^1$

素因数の和:1636

約数の個数: 20

約数和(自身を含む): 82317400

約数和(自身を除く): 17453025

約数列:

[1, 5, 25, 67, 125, 335, 625, 1549, 1675, 7745, 8375, 38725, 41875, 103783, 193625, 518915, 968125, 2594575, 12972875, 64864375]

約数ペア:

[(1, 64864375), (5, 12972875), (25, 2594575), (67, 968125), (125, 518915), (335, 193625), (625, 103783), (1549, 41875), (1675, 38725), (7745, 8375)]