3999999

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2054

約数の個数: 16

約数和(自身を含む): 5760000

約数和(自身を除く): 1760001

約数列:

[1, 3, 23, 29, 69, 87, 667, 1999, 2001, 5997, 45977, 57971, 137931, 173913, 1333333, 3999999]

約数ペア:

[(1, 3999999), (3, 1333333), (23, 173913), (29, 137931), (69, 57971), (87, 45977), (667, 5997), (1999, 2001)]