20467915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18523}}^1$

素因数の和:18558

約数の個数: 16

約数和(自身を含む): 28008288

約数和(自身を除く): 7540373

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18523, 92615, 240799, 314891, 1203995, 1574455, 4093583, 20467915]

約数ペア:

[(1, 20467915), (5, 4093583), (13, 1574455), (17, 1203995), (65, 314891), (85, 240799), (221, 92615), (1105, 18523)]