18158125

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{1709}}^1$

素因数の和:1746

約数の個数: 20

約数和(自身を含む): 24039180

約数和(自身を除く): 5881055

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 1709, 2125, 8545, 10625, 29053, 42725, 145265, 213625, 726325, 1068125, 3631625, 18158125]

約数ペア:

[(1, 18158125), (5, 3631625), (17, 1068125), (25, 726325), (85, 213625), (125, 145265), (425, 42725), (625, 29053), (1709, 10625), (2125, 8545)]