19782711

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{18787}}^1$

素因数の和:18812

約数の個数: 20

約数和(自身を含む): 31826872

約数和(自身を除く): 12044161

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 18787, 56361, 169083, 244231, 507249, 732693, 1521747, 2198079, 6594237, 19782711]

約数ペア:

[(1, 19782711), (3, 6594237), (9, 2198079), (13, 1521747), (27, 732693), (39, 507249), (81, 244231), (117, 169083), (351, 56361), (1053, 18787)]