139656321

素因数分解:

$3^2\times 7^2\times {\mathrm{316681}}^1$

素因数の和:316701

約数の個数: 18

約数和(自身を含む): 234661362

約数和(自身を除く): 95005041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 316681, 950043, 2216767, 2850129, 6650301, 15517369, 19950903, 46552107, 139656321]

約数ペア:

[(1, 139656321), (3, 46552107), (7, 19950903), (9, 15517369), (21, 6650301), (49, 2850129), (63, 2216767), (147, 950043), (441, 316681)]