28260639

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{25951}}^1$

素因数の和:25979

約数の個数: 18

約数和(自身を含む): 44871008

約数和(自身を除く): 16610369

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 25951, 77853, 233559, 285461, 856383, 2569149, 3140071, 9420213, 28260639]

約数ペア:

[(1, 28260639), (3, 9420213), (9, 3140071), (11, 2569149), (33, 856383), (99, 285461), (121, 233559), (363, 77853), (1089, 25951)]