80980964

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{56081}}^1$

素因数の和:56123

約数の個数: 18

約数和(自身を含む): 149570694

約数和(自身を除く): 68589730

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 56081, 112162, 224324, 1065539, 2131078, 4262156, 20245241, 40490482, 80980964]

約数ペア:

[(1, 80980964), (2, 40490482), (4, 20245241), (19, 4262156), (38, 2131078), (76, 1065539), (361, 224324), (722, 112162), (1444, 56081)]