21209172

素因数分解:

$2^2\times 3^1\times {\mathrm{631}}^1\times {\mathrm{2801}}^1$

素因数の和:3439

約数の個数: 24

約数和(自身を含む): 49584192

約数和(自身を除く): 28375020

約数列:

[1, 2, 3, 4, 6, 12, 631, 1262, 1893, 2524, 2801, 3786, 5602, 7572, 8403, 11204, 16806, 33612, 1767431, 3534862, 5302293, 7069724, 10604586, 21209172]

約数ペア:

[(1, 21209172), (2, 10604586), (3, 7069724), (4, 5302293), (6, 3534862), (12, 1767431), (631, 33612), (1262, 16806), (1893, 11204), (2524, 8403), (2801, 7572), (3786, 5602)]