20505410

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^2\times {\mathrm{1109}}^1$

素因数の和:1202

約数の個数: 24

約数和(自身を含む): 37822140

約数和(自身を除く): 17316730

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 1109, 1849, 2218, 3698, 5545, 9245, 11090, 18490, 47687, 95374, 238435, 476870, 2050541, 4101082, 10252705, 20505410]

約数ペア:

[(1, 20505410), (2, 10252705), (5, 4101082), (10, 2050541), (43, 476870), (86, 238435), (215, 95374), (430, 47687), (1109, 18490), (1849, 11090), (2218, 9245), (3698, 5545)]