16850840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 39584160

約数和(自身を除く): 22733320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 97, 101, 172, 194, 202, 215, 344, 388, 404, 430, 485, 505, 776, 808, 860, 970, 1010, 1720, 1940, 2020, 3880, 4040, 4171, 4343, 8342, 8686, 9797, 16684, 17372, 19594, 20855, 21715, 33368, 34744, 39188, 41710, 43430, 48985, 78376, 83420, 86860, 97970, 166840, 173720, 195940, 391880, 421271, 842542, 1685084, 2106355, 3370168, 4212710, 8425420, 16850840]

約数ペア:

[(1, 16850840), (2, 8425420), (4, 4212710), (5, 3370168), (8, 2106355), (10, 1685084), (20, 842542), (40, 421271), (43, 391880), (86, 195940), (97, 173720), (101, 166840), (172, 97970), (194, 86860), (202, 83420), (215, 78376), (344, 48985), (388, 43430), (404, 41710), (430, 39188), (485, 34744), (505, 33368), (776, 21715), (808, 20855), (860, 19594), (970, 17372), (1010, 16684), (1720, 9797), (1940, 8686), (2020, 8342), (3880, 4343), (4040, 4171)]