21904953

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19681}}^1$

素因数の和:19744

約数の個数: 16

約数和(自身を含む): 34010496

約数和(自身を除く): 12105543

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19681, 59043, 137767, 413301, 1043093, 3129279, 7301651, 21904953]

約数ペア:

[(1, 21904953), (3, 7301651), (7, 3129279), (21, 1043093), (53, 413301), (159, 137767), (371, 59043), (1113, 19681)]