13421891

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{61}}^1$

素因数の和:171

約数の個数: 24

約数和(自身を含む): 16900704

約数和(自身を除く): 3478813

約数列:

[1, 7, 17, 43, 61, 119, 301, 427, 731, 1037, 1849, 2623, 5117, 7259, 12943, 18361, 31433, 44591, 112789, 220031, 312137, 789523, 1917413, 13421891]

約数ペア:

[(1, 13421891), (7, 1917413), (17, 789523), (43, 312137), (61, 220031), (119, 112789), (301, 44591), (427, 31433), (731, 18361), (1037, 12943), (1849, 7259), (2623, 5117)]