21361239

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{6133}}^1$

素因数の和:6188

約数の個数: 20

約数和(自身を含む): 32657416

約数和(自身を除く): 11296177

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 6133, 18399, 55197, 165591, 263719, 496773, 791157, 2373471, 7120413, 21361239]

約数ペア:

[(1, 21361239), (3, 7120413), (9, 2373471), (27, 791157), (43, 496773), (81, 263719), (129, 165591), (387, 55197), (1161, 18399), (3483, 6133)]