209215980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{387437}}^1$

素因数の和:387455

約数の個数: 48

約数和(自身を含む): 650895840

約数和(自身を除く): 441679860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 387437, 774874, 1162311, 1549748, 1937185, 2324622, 3486933, 3874370, 4649244, 5811555, 6973866, 7748740, 10460799, 11623110, 13947732, 17434665, 20921598, 23246220, 34869330, 41843196, 52303995, 69738660, 104607990, 209215980]

約数ペア:

[(1, 209215980), (2, 104607990), (3, 69738660), (4, 52303995), (5, 41843196), (6, 34869330), (9, 23246220), (10, 20921598), (12, 17434665), (15, 13947732), (18, 11623110), (20, 10460799), (27, 7748740), (30, 6973866), (36, 5811555), (45, 4649244), (54, 3874370), (60, 3486933), (90, 2324622), (108, 1937185), (135, 1549748), (180, 1162311), (270, 774874), (540, 387437)]