51485080

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1291}}^1$

素因数の和:2299

約数の個数: 32

約数和(自身を含む): 116047440

約数和(自身を除く): 64562360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1291, 1994, 2582, 3988, 4985, 5164, 6455, 7976, 9970, 10328, 12910, 19940, 25820, 39880, 51640, 1287127, 2574254, 5148508, 6435635, 10297016, 12871270, 25742540, 51485080]

約数ペア:

[(1, 51485080), (2, 25742540), (4, 12871270), (5, 10297016), (8, 6435635), (10, 5148508), (20, 2574254), (40, 1287127), (997, 51640), (1291, 39880), (1994, 25820), (2582, 19940), (3988, 12910), (4985, 10328), (5164, 9970), (6455, 7976)]