20156045

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1429}}^1$

素因数の和:1485

約数の個数: 32

約数和(自身を含む): 30750720

約数和(自身を除く): 10594675

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 155, 217, 403, 455, 1085, 1429, 2015, 2821, 7145, 10003, 14105, 18577, 44299, 50015, 92885, 130039, 221495, 310093, 575887, 650195, 1550465, 2879435, 4031209, 20156045]

約数ペア:

[(1, 20156045), (5, 4031209), (7, 2879435), (13, 1550465), (31, 650195), (35, 575887), (65, 310093), (91, 221495), (155, 130039), (217, 92885), (403, 50015), (455, 44299), (1085, 18577), (1429, 14105), (2015, 10003), (2821, 7145)]