20389968005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{12783679}}^1$

素因数の和:12783724

約数の個数: 16

約数和(自身を含む): 27612748800

約数和(自身を除く): 7222780795

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 12783679, 63918395, 140620469, 370726691, 703102345, 1853633455, 4077993601, 20389968005]

約数ペア:

[(1, 20389968005), (5, 4077993601), (11, 1853633455), (29, 703102345), (55, 370726691), (145, 140620469), (319, 63918395), (1595, 12783679)]