21212906

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4363}}^1$

素因数の和:4406

約数の個数: 32

約数和(自身を含む): 39590208

約数和(自身を除く): 18377302

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 143, 187, 221, 286, 374, 442, 2431, 4363, 4862, 8726, 47993, 56719, 74171, 95986, 113438, 148342, 623909, 815881, 964223, 1247818, 1631762, 1928446, 10606453, 21212906]

約数ペア:

[(1, 21212906), (2, 10606453), (11, 1928446), (13, 1631762), (17, 1247818), (22, 964223), (26, 815881), (34, 623909), (143, 148342), (187, 113438), (221, 95986), (286, 74171), (374, 56719), (442, 47993), (2431, 8726), (4363, 4862)]