20047145

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{3709}}^1$

素因数の和:3784

約数の個数: 16

約数和(自身を含む): 25643520

約数和(自身を除く): 5596375

約数列:

[1, 5, 23, 47, 115, 235, 1081, 3709, 5405, 18545, 85307, 174323, 426535, 871615, 4009429, 20047145]

約数ペア:

[(1, 20047145), (5, 4009429), (23, 871615), (47, 426535), (115, 174323), (235, 85307), (1081, 18545), (3709, 5405)]