18780068

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{743}}^1$

素因数の和:907

約数の個数: 24

約数和(自身を含む): 33747840

約数和(自身を除く): 14967772

約数列:

[1, 2, 4, 71, 89, 142, 178, 284, 356, 743, 1486, 2972, 6319, 12638, 25276, 52753, 66127, 105506, 132254, 211012, 264508, 4695017, 9390034, 18780068]

約数ペア:

[(1, 18780068), (2, 9390034), (4, 4695017), (71, 264508), (89, 211012), (142, 132254), (178, 105506), (284, 66127), (356, 52753), (743, 25276), (1486, 12638), (2972, 6319)]