20916927

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:420

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 11431233

約数列:

[1, 3, 9, 27, 47, 53, 141, 159, 311, 423, 477, 933, 1269, 1431, 2491, 2799, 7473, 8397, 14617, 16483, 22419, 43851, 49449, 67257, 131553, 148347, 394659, 445041, 774701, 2324103, 6972309, 20916927]

約数ペア:

[(1, 20916927), (3, 6972309), (9, 2324103), (27, 774701), (47, 445041), (53, 394659), (141, 148347), (159, 131553), (311, 67257), (423, 49449), (477, 43851), (933, 22419), (1269, 16483), (1431, 14617), (2491, 8397), (2799, 7473)]