21715779

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{977}}^1$

素因数の和:1250

約数の個数: 16

約数和(自身を含む): 30044160

約数和(自身を除く): 8328381

約数列:

[1, 3, 31, 93, 239, 717, 977, 2931, 7409, 22227, 30287, 90861, 233503, 700509, 7238593, 21715779]

約数ペア:

[(1, 21715779), (3, 7238593), (31, 700509), (93, 233503), (239, 90861), (717, 30287), (977, 22227), (2931, 7409)]