21220143

素因数分解:

$3^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{2281}}^1$

素因数の和:2734

約数の個数: 16

約数和(自身を含む): 32422656

約数和(自身を除く): 11202513

約数列:

[1, 3, 7, 21, 443, 1329, 2281, 3101, 6843, 9303, 15967, 47901, 1010483, 3031449, 7073381, 21220143]

約数ペア:

[(1, 21220143), (3, 7073381), (7, 3031449), (21, 1010483), (443, 47901), (1329, 15967), (2281, 9303), (3101, 6843)]