12842380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 28052640

約数和(自身を除く): 15210260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 109, 137, 172, 215, 218, 274, 430, 436, 545, 548, 685, 860, 1090, 1370, 2180, 2740, 4687, 5891, 9374, 11782, 14933, 18748, 23435, 23564, 29455, 29866, 46870, 58910, 59732, 74665, 93740, 117820, 149330, 298660, 642119, 1284238, 2568476, 3210595, 6421190, 12842380]

約数ペア:

[(1, 12842380), (2, 6421190), (4, 3210595), (5, 2568476), (10, 1284238), (20, 642119), (43, 298660), (86, 149330), (109, 117820), (137, 93740), (172, 74665), (215, 59732), (218, 58910), (274, 46870), (430, 29866), (436, 29455), (545, 23564), (548, 23435), (685, 18748), (860, 14933), (1090, 11782), (1370, 9374), (2180, 5891), (2740, 4687)]