21162820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151163}}^1$

素因数の和:151179

約数の個数: 24

約数和(自身を含む): 50791104

約数和(自身を除く): 29628284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151163, 302326, 604652, 755815, 1058141, 1511630, 2116282, 3023260, 4232564, 5290705, 10581410, 21162820]

約数ペア:

[(1, 21162820), (2, 10581410), (4, 5290705), (5, 4232564), (7, 3023260), (10, 2116282), (14, 1511630), (20, 1058141), (28, 755815), (35, 604652), (70, 302326), (140, 151163)]