18120021

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{4451}}^1$

素因数の和:4536

約数の個数: 16

約数和(自身を含む): 25643520

約数和(自身を除く): 7523499

約数列:

[1, 3, 23, 59, 69, 177, 1357, 4071, 4451, 13353, 102373, 262609, 307119, 787827, 6040007, 18120021]

約数ペア:

[(1, 18120021), (3, 6040007), (23, 787827), (59, 307119), (69, 262609), (177, 102373), (1357, 13353), (4071, 4451)]