54990999

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37951}}^1$

素因数の和:37987

約数の個数: 24

約数和(自身を含む): 94728192

約数和(自身を除く): 39737193

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 37951, 113853, 265657, 341559, 796971, 872873, 2390913, 2618619, 6110111, 7855857, 18330333, 54990999]

約数ペア:

[(1, 54990999), (3, 18330333), (7, 7855857), (9, 6110111), (21, 2618619), (23, 2390913), (63, 872873), (69, 796971), (161, 341559), (207, 265657), (483, 113853), (1449, 37951)]