21042189

素因数分解:

$3^2\times 7^1\times {\mathrm{569}}^1\times {\mathrm{587}}^1$

素因数の和:1169

約数の個数: 24

約数和(自身を含む): 34856640

約数和(自身を除く): 13814451

約数列:

[1, 3, 7, 9, 21, 63, 569, 587, 1707, 1761, 3983, 4109, 5121, 5283, 11949, 12327, 35847, 36981, 334003, 1002009, 2338021, 3006027, 7014063, 21042189]

約数ペア:

[(1, 21042189), (3, 7014063), (7, 3006027), (9, 2338021), (21, 1002009), (63, 334003), (569, 36981), (587, 35847), (1707, 12327), (1761, 11949), (3983, 5283), (4109, 5121)]