20664574

素因数分解:

$2^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:233

約数の個数: 48

約数和(自身を含む): 38208240

約数和(自身を除く): 17543666

約数列:

[1, 2, 7, 14, 37, 41, 49, 74, 82, 98, 139, 259, 278, 287, 518, 574, 973, 1517, 1813, 1946, 2009, 3034, 3626, 4018, 5143, 5699, 6811, 10286, 10619, 11398, 13622, 21238, 36001, 39893, 72002, 74333, 79786, 148666, 210863, 252007, 279251, 421726, 504014, 558502, 1476041, 2952082, 10332287, 20664574]

約数ペア:

[(1, 20664574), (2, 10332287), (7, 2952082), (14, 1476041), (37, 558502), (41, 504014), (49, 421726), (74, 279251), (82, 252007), (98, 210863), (139, 148666), (259, 79786), (278, 74333), (287, 72002), (518, 39893), (574, 36001), (973, 21238), (1517, 13622), (1813, 11398), (1946, 10619), (2009, 10286), (3034, 6811), (3626, 5699), (4018, 5143)]