21258580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151847}}^1$

素因数の和:151863

約数の個数: 24

約数和(自身を含む): 51020928

約数和(自身を除く): 29762348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151847, 303694, 607388, 759235, 1062929, 1518470, 2125858, 3036940, 4251716, 5314645, 10629290, 21258580]

約数ペア:

[(1, 21258580), (2, 10629290), (4, 5314645), (5, 4251716), (7, 3036940), (10, 2125858), (14, 1518470), (20, 1062929), (28, 759235), (35, 607388), (70, 303694), (140, 151847)]