18387855

素因数分解:

$3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1019}}^1$

素因数の和:1431

約数の個数: 24

約数和(自身を含む): 31983120

約数和(自身を除く): 13595265

約数列:

[1, 3, 5, 9, 15, 45, 401, 1019, 1203, 2005, 3057, 3609, 5095, 6015, 9171, 15285, 18045, 45855, 408619, 1225857, 2043095, 3677571, 6129285, 18387855]

約数ペア:

[(1, 18387855), (3, 6129285), (5, 3677571), (9, 2043095), (15, 1225857), (45, 408619), (401, 45855), (1019, 18045), (1203, 15285), (2005, 9171), (3057, 6015), (3609, 5095)]