21230256

素因数分解:

$2^4\times 3^1\times {\mathrm{257}}^1\times {\mathrm{1721}}^1$

素因数の和:1989

約数の個数: 40

約数和(自身を含む): 55090224

約数和(自身を除く): 33859968

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 257, 514, 771, 1028, 1542, 1721, 2056, 3084, 3442, 4112, 5163, 6168, 6884, 10326, 12336, 13768, 20652, 27536, 41304, 82608, 442297, 884594, 1326891, 1769188, 2653782, 3538376, 5307564, 7076752, 10615128, 21230256]

約数ペア:

[(1, 21230256), (2, 10615128), (3, 7076752), (4, 5307564), (6, 3538376), (8, 2653782), (12, 1769188), (16, 1326891), (24, 884594), (48, 442297), (257, 82608), (514, 41304), (771, 27536), (1028, 20652), (1542, 13768), (1721, 12336), (2056, 10326), (3084, 6884), (3442, 6168), (4112, 5163)]