20649495

素因数分解:

$3^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{3433}}^1$

素因数の和:3842

約数の個数: 16

約数和(自身を含む): 33131232

約数和(自身を除く): 12481737

約数列:

[1, 3, 5, 15, 401, 1203, 2005, 3433, 6015, 10299, 17165, 51495, 1376633, 4129899, 6883165, 20649495]

約数ペア:

[(1, 20649495), (3, 6883165), (5, 4129899), (15, 1376633), (401, 51495), (1203, 17165), (2005, 10299), (3433, 6015)]