28688373

素因数分解:

$3^2\times 7^2\times {\mathrm{65053}}^1$

素因数の和:65073

約数の個数: 18

約数和(自身を含む): 48205014

約数和(自身を除く): 19516641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 65053, 195159, 455371, 585477, 1366113, 3187597, 4098339, 9562791, 28688373]

約数ペア:

[(1, 28688373), (3, 9562791), (7, 4098339), (9, 3187597), (21, 1366113), (49, 585477), (63, 455371), (147, 195159), (441, 65053)]