20820051

素因数分解:

$3^3\times 7^2\times {\mathrm{15737}}^1$

素因数の和:15760

約数の個数: 24

約数和(自身を含む): 35882640

約数和(自身を除く): 15062589

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15737, 47211, 110159, 141633, 330477, 424899, 771113, 991431, 2313339, 2974293, 6940017, 20820051]

約数ペア:

[(1, 20820051), (3, 6940017), (7, 2974293), (9, 2313339), (21, 991431), (27, 771113), (49, 424899), (63, 330477), (147, 141633), (189, 110159), (441, 47211), (1323, 15737)]