1997667

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{857}}^1$

素因数の和:907

約数の個数: 24

約数和(自身を含む): 3390816

約数和(自身を除く): 1393149

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 857, 2331, 2571, 5999, 7713, 17997, 31709, 53991, 95127, 221963, 285381, 665889, 1997667]

約数ペア:

[(1, 1997667), (3, 665889), (7, 285381), (9, 221963), (21, 95127), (37, 53991), (63, 31709), (111, 17997), (259, 7713), (333, 5999), (777, 2571), (857, 2331)]