20413445

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{617}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 26475120

約数和(自身を除く): 6061675

約数列:

[1, 5, 13, 65, 509, 617, 2545, 3085, 6617, 8021, 33085, 40105, 314053, 1570265, 4082689, 20413445]

約数ペア:

[(1, 20413445), (5, 4082689), (13, 1570265), (65, 314053), (509, 40105), (617, 33085), (2545, 8021), (3085, 6617)]