20178039

素因数分解:

$3^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1499}}^1$

素因数の和:2150

約数の個数: 16

約数和(自身を含む): 30816000

約数和(自身を除く): 10637961

約数列:

[1, 3, 7, 21, 641, 1499, 1923, 4487, 4497, 10493, 13461, 31479, 960859, 2882577, 6726013, 20178039]

約数ペア:

[(1, 20178039), (3, 6726013), (7, 2882577), (21, 960859), (641, 31479), (1499, 13461), (1923, 10493), (4487, 4497)]