20138780

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2273}}^1$

素因数の和:2725

約数の個数: 24

約数和(自身を含む): 42405552

約数和(自身を除く): 22266772

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 2273, 4430, 4546, 8860, 9092, 11365, 22730, 45460, 1006939, 2013878, 4027756, 5034695, 10069390, 20138780]

約数ペア:

[(1, 20138780), (2, 10069390), (4, 5034695), (5, 4027756), (10, 2013878), (20, 1006939), (443, 45460), (886, 22730), (1772, 11365), (2215, 9092), (2273, 8860), (4430, 4546)]