21500877

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1\times {\mathrm{353}}^1$

素因数の和:692

約数の個数: 16

約数和(自身を含む): 29226240

約数和(自身を除く): 7725363

約数列:

[1, 3, 79, 237, 257, 353, 771, 1059, 20303, 27887, 60909, 83661, 90721, 272163, 7166959, 21500877]

約数ペア:

[(1, 21500877), (3, 7166959), (79, 272163), (237, 90721), (257, 83661), (353, 60909), (771, 27887), (1059, 20303)]