91991315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{19387}}^1$

素因数の和:19478

約数の個数: 16

約数和(自身を含む): 120515808

約数和(自身を除く): 28524493

約数列:

[1, 5, 13, 65, 73, 365, 949, 4745, 19387, 96935, 252031, 1260155, 1415251, 7076255, 18398263, 91991315]

約数ペア:

[(1, 91991315), (5, 18398263), (13, 7076255), (65, 1415251), (73, 1260155), (365, 252031), (949, 96935), (4745, 19387)]