21648473

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 27706560

約数和(自身を除く): 6058087

約数列:

[1, 7, 11, 61, 77, 121, 419, 427, 671, 847, 2933, 4609, 4697, 7381, 25559, 32263, 50699, 51667, 178913, 281149, 354893, 1968043, 3092639, 21648473]

約数ペア:

[(1, 21648473), (7, 3092639), (11, 1968043), (61, 354893), (77, 281149), (121, 178913), (419, 51667), (427, 50699), (671, 32263), (847, 25559), (2933, 7381), (4609, 4697)]