21956151

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19727}}^1$

素因数の和:19790

約数の個数: 16

約数和(自身を含む): 34089984

約数和(自身を除く): 12133833

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19727, 59181, 138089, 414267, 1045531, 3136593, 7318717, 21956151]

約数ペア:

[(1, 21956151), (3, 7318717), (7, 3136593), (21, 1045531), (53, 414267), (159, 138089), (371, 59181), (1113, 19727)]