81996818

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{337}}^2$

素因数の和:714

約数の個数: 18

約数和(自身を含む): 130195701

約数和(自身を除く): 48198883

約数列:

[1, 2, 19, 38, 337, 361, 674, 722, 6403, 12806, 113569, 121657, 227138, 243314, 2157811, 4315622, 40998409, 81996818]

約数ペア:

[(1, 81996818), (2, 40998409), (19, 4315622), (38, 2157811), (337, 243314), (361, 227138), (674, 121657), (722, 113569), (6403, 12806)]