51487640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{12497}}^1$

素因数の和:12611

約数の個数: 32

約数和(自身を含む): 116981280

約数和(自身を除く): 65493640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 12497, 24994, 49988, 62485, 99976, 124970, 249940, 499880, 1287191, 2574382, 5148764, 6435955, 10297528, 12871910, 25743820, 51487640]

約数ペア:

[(1, 51487640), (2, 25743820), (4, 12871910), (5, 10297528), (8, 6435955), (10, 5148764), (20, 2574382), (40, 1287191), (103, 499880), (206, 249940), (412, 124970), (515, 99976), (824, 62485), (1030, 49988), (2060, 24994), (4120, 12497)]