21241940

素因数分解:

$2^2\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1171}}^1$

素因数の和:2087

約数の個数: 24

約数和(自身を含む): 44695392

約数和(自身を除く): 23453452

約数列:

[1, 2, 4, 5, 10, 20, 907, 1171, 1814, 2342, 3628, 4535, 4684, 5855, 9070, 11710, 18140, 23420, 1062097, 2124194, 4248388, 5310485, 10620970, 21241940]

約数ペア:

[(1, 21241940), (2, 10620970), (4, 5310485), (5, 4248388), (10, 2124194), (20, 1062097), (907, 23420), (1171, 18140), (1814, 11710), (2342, 9070), (3628, 5855), (4535, 4684)]