20342480

素因数分解:

$2^4\times 5^1\times {\mathrm{254281}}^1$

素因数の和:254294

約数の個数: 20

約数和(自身を含む): 47296452

約数和(自身を除く): 26953972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254281, 508562, 1017124, 1271405, 2034248, 2542810, 4068496, 5085620, 10171240, 20342480]

約数ペア:

[(1, 20342480), (2, 10171240), (4, 5085620), (5, 4068496), (8, 2542810), (10, 2034248), (16, 1271405), (20, 1017124), (40, 508562), (80, 254281)]