51281480

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21017}}^1$

素因数の和:21089

約数の個数: 32

約数和(自身を含む): 117280440

約数和(自身を除く): 65998960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 21017, 42034, 84068, 105085, 168136, 210170, 420340, 840680, 1282037, 2564074, 5128148, 6410185, 10256296, 12820370, 25640740, 51281480]

約数ペア:

[(1, 51281480), (2, 25640740), (4, 12820370), (5, 10256296), (8, 6410185), (10, 5128148), (20, 2564074), (40, 1282037), (61, 840680), (122, 420340), (244, 210170), (305, 168136), (488, 105085), (610, 84068), (1220, 42034), (2440, 21017)]