20400625

素因数分解:

$5^4\times 7^1\times {\mathrm{4663}}^1$

素因数の和:4690

約数の個数: 20

約数和(自身を含む): 29140672

約数和(自身を除く): 8740047

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 4375, 4663, 23315, 32641, 116575, 163205, 582875, 816025, 2914375, 4080125, 20400625]

約数ペア:

[(1, 20400625), (5, 4080125), (7, 2914375), (25, 816025), (35, 582875), (125, 163205), (175, 116575), (625, 32641), (875, 23315), (4375, 4663)]