20488293

素因数分解:

$3^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{811}}^1$

素因数の和:1225

約数の個数: 24

約数和(自身を含む): 33948096

約数和(自身を除く): 13459803

約数列:

[1, 3, 7, 9, 21, 63, 401, 811, 1203, 2433, 2807, 3609, 5677, 7299, 8421, 17031, 25263, 51093, 325211, 975633, 2276477, 2926899, 6829431, 20488293]

約数ペア:

[(1, 20488293), (3, 6829431), (7, 2926899), (9, 2276477), (21, 975633), (63, 325211), (401, 51093), (811, 25263), (1203, 17031), (2433, 8421), (2807, 7299), (3609, 5677)]