21398795

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{5807}}^1$

素因数の和:5890

約数の個数: 16

約数和(自身を含む): 28435968

約数和(自身を除く): 7037173

約数列:

[1, 5, 11, 55, 67, 335, 737, 3685, 5807, 29035, 63877, 319385, 389069, 1945345, 4279759, 21398795]

約数ペア:

[(1, 21398795), (5, 4279759), (11, 1945345), (55, 389069), (67, 319385), (335, 63877), (737, 29035), (3685, 5807)]