220121915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{72053}}^1$

素因数の和:72118

約数の個数: 16

約数和(自身を含む): 290521728

約数和(自身を除く): 70399813

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 72053, 360265, 936689, 3386491, 4683445, 16932455, 44024383, 220121915]

約数ペア:

[(1, 220121915), (5, 44024383), (13, 16932455), (47, 4683445), (65, 3386491), (235, 936689), (611, 360265), (3055, 72053)]