28515249

素因数分解:

$3^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{1721}}^1$

素因数の和:1997

約数の個数: 24

約数和(自身を含む): 47279232

約数和(自身を除く): 18763983

約数列:

[1, 3, 7, 9, 21, 63, 263, 789, 1721, 1841, 2367, 5163, 5523, 12047, 15489, 16569, 36141, 108423, 452623, 1357869, 3168361, 4073607, 9505083, 28515249]

約数ペア:

[(1, 28515249), (3, 9505083), (7, 4073607), (9, 3168361), (21, 1357869), (63, 452623), (263, 108423), (789, 36141), (1721, 16569), (1841, 15489), (2367, 12047), (5163, 5523)]