81299728

素因数分解:

$2^4\times {\mathrm{1117}}^1\times {\mathrm{4549}}^1$

素因数の和:5674

約数の個数: 20

約数和(自身を含む): 157693900

約数和(自身を除く): 76394172

約数列:

[1, 2, 4, 8, 16, 1117, 2234, 4468, 4549, 8936, 9098, 17872, 18196, 36392, 72784, 5081233, 10162466, 20324932, 40649864, 81299728]

約数ペア:

[(1, 81299728), (2, 40649864), (4, 20324932), (8, 10162466), (16, 5081233), (1117, 72784), (2234, 36392), (4468, 18196), (4549, 17872), (8936, 9098)]