20659580

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14549}}^1$

素因数の和:14629

約数の個数: 24

約数和(自身を含む): 43999200

約数和(自身を除く): 23339620

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14549, 29098, 58196, 72745, 145490, 290980, 1032979, 2065958, 4131916, 5164895, 10329790, 20659580]

約数ペア:

[(1, 20659580), (2, 10329790), (4, 5164895), (5, 4131916), (10, 2065958), (20, 1032979), (71, 290980), (142, 145490), (284, 72745), (355, 58196), (710, 29098), (1420, 14549)]