8425420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 18472608

約数和(自身を除く): 10047188

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 97, 101, 172, 194, 202, 215, 388, 404, 430, 485, 505, 860, 970, 1010, 1940, 2020, 4171, 4343, 8342, 8686, 9797, 16684, 17372, 19594, 20855, 21715, 39188, 41710, 43430, 48985, 83420, 86860, 97970, 195940, 421271, 842542, 1685084, 2106355, 4212710, 8425420]

約数ペア:

[(1, 8425420), (2, 4212710), (4, 2106355), (5, 1685084), (10, 842542), (20, 421271), (43, 195940), (86, 97970), (97, 86860), (101, 83420), (172, 48985), (194, 43430), (202, 41710), (215, 39188), (388, 21715), (404, 20855), (430, 19594), (485, 17372), (505, 16684), (860, 9797), (970, 8686), (1010, 8342), (1940, 4343), (2020, 4171)]