21101728

素因数分解:

$2^5\times {\mathrm{101}}^1\times {\mathrm{6529}}^1$

素因数の和:6640

約数の個数: 24

約数和(自身を含む): 41961780

約数和(自身を除く): 20860052

約数列:

[1, 2, 4, 8, 16, 32, 101, 202, 404, 808, 1616, 3232, 6529, 13058, 26116, 52232, 104464, 208928, 659429, 1318858, 2637716, 5275432, 10550864, 21101728]

約数ペア:

[(1, 21101728), (2, 10550864), (4, 5275432), (8, 2637716), (16, 1318858), (32, 659429), (101, 208928), (202, 104464), (404, 52232), (808, 26116), (1616, 13058), (3232, 6529)]