20490535

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10169}}^1$

素因数の和:10218

約数の個数: 16

約数和(自身を含む): 27336960

約数和(自身を除く): 6846425

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10169, 50845, 132197, 315239, 660985, 1576195, 4098107, 20490535]

約数ペア:

[(1, 20490535), (5, 4098107), (13, 1576195), (31, 660985), (65, 315239), (155, 132197), (403, 50845), (2015, 10169)]