18347721

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37987}}^1$

素因数の和:38020

約数の個数: 16

約数和(自身を含む): 29174784

約数和(自身を除く): 10827063

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 37987, 113961, 265909, 797727, 873701, 2621103, 6115907, 18347721]

約数ペア:

[(1, 18347721), (3, 6115907), (7, 2621103), (21, 873701), (23, 797727), (69, 265909), (161, 113961), (483, 37987)]