20501290

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{25951}}^1$

素因数の和:26037

約数の個数: 16

約数和(自身を含む): 37370880

約数和(自身を除く): 16869590

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 25951, 51902, 129755, 259510, 2050129, 4100258, 10250645, 20501290]

約数ペア:

[(1, 20501290), (2, 10250645), (5, 4100258), (10, 2050129), (79, 259510), (158, 129755), (395, 51902), (790, 25951)]