2178440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4951}}^1$

素因数の和:4973

約数の個数: 32

約数和(自身を含む): 5348160

約数和(自身を除く): 3169720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 4951, 9902, 19804, 24755, 39608, 49510, 54461, 99020, 108922, 198040, 217844, 272305, 435688, 544610, 1089220, 2178440]

約数ペア:

[(1, 2178440), (2, 1089220), (4, 544610), (5, 435688), (8, 272305), (10, 217844), (11, 198040), (20, 108922), (22, 99020), (40, 54461), (44, 49510), (55, 39608), (88, 24755), (110, 19804), (220, 9902), (440, 4951)]