9780008

素因数分解:

$2^3\times 7^2\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 21734100

約数和(自身を除く): 11954092

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 61, 98, 122, 196, 244, 392, 409, 427, 488, 818, 854, 1636, 1708, 2863, 2989, 3272, 3416, 5726, 5978, 11452, 11956, 20041, 22904, 23912, 24949, 40082, 49898, 80164, 99796, 160328, 174643, 199592, 349286, 698572, 1222501, 1397144, 2445002, 4890004, 9780008]

約数ペア:

[(1, 9780008), (2, 4890004), (4, 2445002), (7, 1397144), (8, 1222501), (14, 698572), (28, 349286), (49, 199592), (56, 174643), (61, 160328), (98, 99796), (122, 80164), (196, 49898), (244, 40082), (392, 24949), (409, 23912), (427, 22904), (488, 20041), (818, 11956), (854, 11452), (1636, 5978), (1708, 5726), (2863, 3416), (2989, 3272)]