21290172

素因数分解:

$2^2\times 3^1\times {\mathrm{821}}^1\times {\mathrm{2161}}^1$

素因数の和:2989

約数の個数: 24

約数和(自身を含む): 49760592

約数和(自身を除く): 28470420

約数列:

[1, 2, 3, 4, 6, 12, 821, 1642, 2161, 2463, 3284, 4322, 4926, 6483, 8644, 9852, 12966, 25932, 1774181, 3548362, 5322543, 7096724, 10645086, 21290172]

約数ペア:

[(1, 21290172), (2, 10645086), (3, 7096724), (4, 5322543), (6, 3548362), (12, 1774181), (821, 25932), (1642, 12966), (2161, 9852), (2463, 8644), (3284, 6483), (4322, 4926)]