20418220

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{6761}}^1$

素因数の和:6921

約数の個数: 24

約数和(自身を含む): 43168608

約数和(自身を除く): 22750388

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 6761, 13522, 27044, 33805, 67610, 135220, 1020911, 2041822, 4083644, 5104555, 10209110, 20418220]

約数ペア:

[(1, 20418220), (2, 10209110), (4, 5104555), (5, 4083644), (10, 2041822), (20, 1020911), (151, 135220), (302, 67610), (604, 33805), (755, 27044), (1510, 13522), (3020, 6761)]