81405968

素因数分解:

$2^4\times 7^1\times {\mathrm{726839}}^1$

素因数の和:726854

約数の個数: 20

約数和(自身を含む): 180256320

約数和(自身を除く): 98850352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 726839, 1453678, 2907356, 5087873, 5814712, 10175746, 11629424, 20351492, 40702984, 81405968]

約数ペア:

[(1, 81405968), (2, 40702984), (4, 20351492), (7, 11629424), (8, 10175746), (14, 5814712), (16, 5087873), (28, 2907356), (56, 1453678), (112, 726839)]