20181708891

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{31583269}}^1$

素因数の和:31583346

約数の個数: 12

約数和(自身を含む): 29561940720

約数和(自身を除く): 9380231829

約数列:

[1, 3, 9, 71, 213, 639, 31583269, 94749807, 284249421, 2242412099, 6727236297, 20181708891]

約数ペア:

[(1, 20181708891), (3, 6727236297), (9, 2242412099), (71, 284249421), (213, 94749807), (639, 31583269)]