81021563

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1\times {\mathrm{1553}}^1$

素因数の和:1846

約数の個数: 16

約数和(自身を含む): 96223680

約数和(自身を除く): 15202117

約数列:

[1, 7, 29, 203, 257, 1553, 1799, 7453, 10871, 45037, 52171, 315259, 399121, 2793847, 11574509, 81021563]

約数ペア:

[(1, 81021563), (7, 11574509), (29, 2793847), (203, 399121), (257, 315259), (1553, 52171), (1799, 45037), (7453, 10871)]