81671956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{9859}}^1$

素因数の和:9991

約数の個数: 24

約数和(自身を含む): 151844000

約数和(自身を除く): 70172044

約数列:

[1, 2, 4, 19, 38, 76, 109, 218, 436, 2071, 4142, 8284, 9859, 19718, 39436, 187321, 374642, 749284, 1074631, 2149262, 4298524, 20417989, 40835978, 81671956]

約数ペア:

[(1, 81671956), (2, 40835978), (4, 20417989), (19, 4298524), (38, 2149262), (76, 1074631), (109, 749284), (218, 374642), (436, 187321), (2071, 39436), (4142, 19718), (8284, 9859)]