81663568

素因数分解:

$2^4\times 7^1\times {\mathrm{729139}}^1$

素因数の和:729154

約数の個数: 20

約数和(自身を含む): 180826720

約数和(自身を除く): 99163152

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 729139, 1458278, 2916556, 5103973, 5833112, 10207946, 11666224, 20415892, 40831784, 81663568]

約数ペア:

[(1, 81663568), (2, 40831784), (4, 20415892), (7, 11666224), (8, 10207946), (14, 5833112), (16, 5103973), (28, 2916556), (56, 1458278), (112, 729139)]