27720221780

素因数分解:

$2^2\times 5^1\times {\mathrm{1386011089}}^1$

素因数の和:1386011098

約数の個数: 12

約数和(自身を含む): 58212465780

約数和(自身を除く): 30492244000

約数列:

[1, 2, 4, 5, 10, 20, 1386011089, 2772022178, 5544044356, 6930055445, 13860110890, 27720221780]

約数ペア:

[(1, 27720221780), (2, 13860110890), (4, 6930055445), (5, 5544044356), (10, 2772022178), (20, 1386011089)]