205124620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{1741}}^1$

素因数の和:1930

約数の個数: 48

約数和(自身を含む): 444251808

約数和(自身を除く): 239127188

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 137, 172, 215, 274, 430, 548, 685, 860, 1370, 1741, 2740, 3482, 5891, 6964, 8705, 11782, 17410, 23564, 29455, 34820, 58910, 74863, 117820, 149726, 238517, 299452, 374315, 477034, 748630, 954068, 1192585, 1497260, 2385170, 4770340, 10256231, 20512462, 41024924, 51281155, 102562310, 205124620]

約数ペア:

[(1, 205124620), (2, 102562310), (4, 51281155), (5, 41024924), (10, 20512462), (20, 10256231), (43, 4770340), (86, 2385170), (137, 1497260), (172, 1192585), (215, 954068), (274, 748630), (430, 477034), (548, 374315), (685, 299452), (860, 238517), (1370, 149726), (1741, 117820), (2740, 74863), (3482, 58910), (5891, 34820), (6964, 29455), (8705, 23564), (11782, 17410)]