20881421

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{977}}^1$

素因数の和:1084

約数の個数: 16

約数和(自身を含む): 23941440

約数和(自身を除く): 3060019

約数列:

[1, 11, 29, 67, 319, 737, 977, 1943, 10747, 21373, 28333, 65459, 311663, 720049, 1898311, 20881421]

約数ペア:

[(1, 20881421), (11, 1898311), (29, 720049), (67, 311663), (319, 65459), (737, 28333), (977, 21373), (1943, 10747)]