28038339

素因数分解:

$3^3\times 7^2\times {\mathrm{21193}}^1$

素因数の和:21216

約数の個数: 24

約数和(自身を含む): 48322320

約数和(自身を除く): 20283981

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 21193, 63579, 148351, 190737, 445053, 572211, 1038457, 1335159, 3115371, 4005477, 9346113, 28038339]

約数ペア:

[(1, 28038339), (3, 9346113), (7, 4005477), (9, 3115371), (21, 1335159), (27, 1038457), (49, 572211), (63, 445053), (147, 190737), (189, 148351), (441, 63579), (1323, 21193)]