80521772

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{55763}}^1$

素因数の和:55805

約数の個数: 18

約数和(自身を含む): 148722588

約数和(自身を除く): 68200816

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 55763, 111526, 223052, 1059497, 2118994, 4237988, 20130443, 40260886, 80521772]

約数ペア:

[(1, 80521772), (2, 40260886), (4, 20130443), (19, 4237988), (38, 2118994), (76, 1059497), (361, 223052), (722, 111526), (1444, 55763)]