18921749

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7927}}^1$

素因数の和:7976

約数の個数: 16

約数和(自身を含む): 24354816

約数和(自身を除く): 5433067

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 7927, 55489, 87197, 245737, 610379, 1720159, 2703107, 18921749]

約数ペア:

[(1, 18921749), (7, 2703107), (11, 1720159), (31, 610379), (77, 245737), (217, 87197), (341, 55489), (2387, 7927)]