1978207

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1117}}^1$

素因数の和:1158

約数の個数: 16

約数和(自身を含む): 2575872

約数和(自身を除く): 597665

約数列:

[1, 7, 11, 23, 77, 161, 253, 1117, 1771, 7819, 12287, 25691, 86009, 179837, 282601, 1978207]

約数ペア:

[(1, 1978207), (7, 282601), (11, 179837), (23, 86009), (77, 25691), (161, 12287), (253, 7819), (1117, 1771)]