19776861

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3931}}^1$

素因数の和:3993

約数の個数: 24

約数和(自身を含む): 31487456

約数和(自身を除く): 11710595

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 3931, 5031, 11793, 35379, 51103, 153309, 169033, 459927, 507099, 1521297, 2197429, 6592287, 19776861]

約数ペア:

[(1, 19776861), (3, 6592287), (9, 2197429), (13, 1521297), (39, 507099), (43, 459927), (117, 169033), (129, 153309), (387, 51103), (559, 35379), (1677, 11793), (3931, 5031)]