20807619

素因数分解:

$3^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1499}}^1$

素因数の和:2170

約数の個数: 16

約数和(自身を含む): 31776000

約数和(自身を除く): 10968381

約数列:

[1, 3, 7, 21, 661, 1499, 1983, 4497, 4627, 10493, 13881, 31479, 990839, 2972517, 6935873, 20807619]

約数ペア:

[(1, 20807619), (3, 6935873), (7, 2972517), (21, 990839), (661, 31479), (1499, 13881), (1983, 10493), (4497, 4627)]