18648518

素因数分解:

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

素因数の和:229

約数の個数: 36

約数和(自身を含む): 33683580

約数和(自身を除く): 15035062

約数列:

[1, 2, 7, 14, 37, 49, 74, 98, 139, 259, 278, 518, 973, 1369, 1813, 1946, 2738, 3626, 5143, 6811, 9583, 10286, 13622, 19166, 36001, 67081, 72002, 134162, 190291, 252007, 380582, 504014, 1332037, 2664074, 9324259, 18648518]

約数ペア:

[(1, 18648518), (2, 9324259), (7, 2664074), (14, 1332037), (37, 504014), (49, 380582), (74, 252007), (98, 190291), (139, 134162), (259, 72002), (278, 67081), (518, 36001), (973, 19166), (1369, 13622), (1813, 10286), (1946, 9583), (2738, 6811), (3626, 5143)]