20118287

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{1117}}^1$

素因数の和:1238

約数の個数: 16

約数和(自身を含む): 24041472

約数和(自身を除く): 3923185

約数列:

[1, 7, 31, 83, 217, 581, 1117, 2573, 7819, 18011, 34627, 92711, 242389, 648977, 2874041, 20118287]

約数ペア:

[(1, 20118287), (7, 2874041), (31, 648977), (83, 242389), (217, 92711), (581, 34627), (1117, 18011), (2573, 7819)]