20279020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14281}}^1$

素因数の和:14361

約数の個数: 24

約数和(自身を含む): 43188768

約数和(自身を除く): 22909748

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14281, 28562, 57124, 71405, 142810, 285620, 1013951, 2027902, 4055804, 5069755, 10139510, 20279020]

約数ペア:

[(1, 20279020), (2, 10139510), (4, 5069755), (5, 4055804), (10, 2027902), (20, 1013951), (71, 285620), (142, 142810), (284, 71405), (355, 57124), (710, 28562), (1420, 14281)]