218212420

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{17291}}^1$

素因数の和:17931

約数の個数: 24

約数和(自身を含む): 458998848

約数和(自身を除く): 240786428

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 2524, 3155, 6310, 12620, 17291, 34582, 69164, 86455, 172910, 345820, 10910621, 21821242, 43642484, 54553105, 109106210, 218212420]

約数ペア:

[(1, 218212420), (2, 109106210), (4, 54553105), (5, 43642484), (10, 21821242), (20, 10910621), (631, 345820), (1262, 172910), (2524, 86455), (3155, 69164), (6310, 34582), (12620, 17291)]