21245554

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{6151}}^1$

素因数の和:6321

約数の個数: 16

約数和(自身を含む): 34992576

約数和(自身を除く): 13747022

約数列:

[1, 2, 11, 22, 157, 314, 1727, 3454, 6151, 12302, 67661, 135322, 965707, 1931414, 10622777, 21245554]

約数ペア:

[(1, 21245554), (2, 10622777), (11, 1931414), (22, 965707), (157, 135322), (314, 67661), (1727, 12302), (3454, 6151)]