20781567

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{673}}^1$

素因数の和:799

約数の個数: 24

約数和(自身を含む): 31122624

約数和(自身を除く): 10341057

約数列:

[1, 3, 9, 47, 73, 141, 219, 423, 657, 673, 2019, 3431, 6057, 10293, 30879, 31631, 49129, 94893, 147387, 284679, 442161, 2309063, 6927189, 20781567]

約数ペア:

[(1, 20781567), (3, 6927189), (9, 2309063), (47, 442161), (73, 284679), (141, 147387), (219, 94893), (423, 49129), (657, 31631), (673, 30879), (2019, 10293), (3431, 6057)]