138715420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{1597}}^1$

素因数の和:1750

約数の個数: 48

約数和(自身を含む): 301216608

約数和(自身を除く): 162501188

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 101, 172, 202, 215, 404, 430, 505, 860, 1010, 1597, 2020, 3194, 4343, 6388, 7985, 8686, 15970, 17372, 21715, 31940, 43430, 68671, 86860, 137342, 161297, 274684, 322594, 343355, 645188, 686710, 806485, 1373420, 1612970, 3225940, 6935771, 13871542, 27743084, 34678855, 69357710, 138715420]

約数ペア:

[(1, 138715420), (2, 69357710), (4, 34678855), (5, 27743084), (10, 13871542), (20, 6935771), (43, 3225940), (86, 1612970), (101, 1373420), (172, 806485), (202, 686710), (215, 645188), (404, 343355), (430, 322594), (505, 274684), (860, 161297), (1010, 137342), (1597, 86860), (2020, 68671), (3194, 43430), (4343, 31940), (6388, 21715), (7985, 17372), (8686, 15970)]