201789920

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{12487}}^1$

素因数の和:12603

約数の個数: 48

約数和(自身を含む): 481487328

約数和(自身を除く): 279697408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1616, 2020, 3232, 4040, 8080, 12487, 16160, 24974, 49948, 62435, 99896, 124870, 199792, 249740, 399584, 499480, 998960, 1261187, 1997920, 2522374, 5044748, 6305935, 10089496, 12611870, 20178992, 25223740, 40357984, 50447480, 100894960, 201789920]

約数ペア:

[(1, 201789920), (2, 100894960), (4, 50447480), (5, 40357984), (8, 25223740), (10, 20178992), (16, 12611870), (20, 10089496), (32, 6305935), (40, 5044748), (80, 2522374), (101, 1997920), (160, 1261187), (202, 998960), (404, 499480), (505, 399584), (808, 249740), (1010, 199792), (1616, 124870), (2020, 99896), (3232, 62435), (4040, 49948), (8080, 24974), (12487, 16160)]