20159321

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{7639}}^1$

素因数の和:7688

約数の個数: 16

約数和(自身を含む): 25670400

約数和(自身を除く): 5511079

約数列:

[1, 7, 13, 29, 91, 203, 377, 2639, 7639, 53473, 99307, 221531, 695149, 1550717, 2879903, 20159321]

約数ペア:

[(1, 20159321), (7, 2879903), (13, 1550717), (29, 695149), (91, 221531), (203, 99307), (377, 53473), (2639, 7639)]