21398674

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{51193}}^1$

素因数の和:51225

約数の個数: 16

約数和(自身を含む): 36859680

約数和(自身を除く): 15461006

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 51193, 102386, 563123, 972667, 1126246, 1945334, 10699337, 21398674]

約数ペア:

[(1, 21398674), (2, 10699337), (11, 1945334), (19, 1126246), (22, 972667), (38, 563123), (209, 102386), (418, 51193)]