81681578

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{8819}}^1$

素因数の和:9253

約数の個数: 16

約数和(自身を含む): 133993440

約数和(自身を除く): 52311862

約数列:

[1, 2, 11, 22, 421, 842, 4631, 8819, 9262, 17638, 97009, 194018, 3712799, 7425598, 40840789, 81681578]

約数ペア:

[(1, 81681578), (2, 40840789), (11, 7425598), (22, 3712799), (421, 194018), (842, 97009), (4631, 17638), (8819, 9262)]