21061455

素因数分解:

$3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{3433}}^1$

素因数の和:3850

約数の個数: 16

約数和(自身を含む): 33790560

約数和(自身を除く): 12729105

約数列:

[1, 3, 5, 15, 409, 1227, 2045, 3433, 6135, 10299, 17165, 51495, 1404097, 4212291, 7020485, 21061455]

約数ペア:

[(1, 21061455), (3, 7020485), (5, 4212291), (15, 1404097), (409, 51495), (1227, 17165), (2045, 10299), (3433, 6135)]