68487820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{821}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 148867488

約数和(自身を除く): 80379668

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 97, 172, 194, 215, 388, 430, 485, 821, 860, 970, 1642, 1940, 3284, 4105, 4171, 8210, 8342, 16420, 16684, 20855, 35303, 41710, 70606, 79637, 83420, 141212, 159274, 176515, 318548, 353030, 398185, 706060, 796370, 1592740, 3424391, 6848782, 13697564, 17121955, 34243910, 68487820]

約数ペア:

[(1, 68487820), (2, 34243910), (4, 17121955), (5, 13697564), (10, 6848782), (20, 3424391), (43, 1592740), (86, 796370), (97, 706060), (172, 398185), (194, 353030), (215, 318548), (388, 176515), (430, 159274), (485, 141212), (821, 83420), (860, 79637), (970, 70606), (1642, 41710), (1940, 35303), (3284, 20855), (4105, 16684), (4171, 16420), (8210, 8342)]