18420087

素因数分解:

$3^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1327}}^1$

素因数の和:1998

約数の個数: 16

約数和(自身を含む): 28132352

約数和(自身を除く): 9712265

約数列:

[1, 3, 7, 21, 661, 1327, 1983, 3981, 4627, 9289, 13881, 27867, 877147, 2631441, 6140029, 18420087]

約数ペア:

[(1, 18420087), (3, 6140029), (7, 2631441), (21, 877147), (661, 27867), (1327, 13881), (1983, 9289), (3981, 4627)]