21505185

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36761}}^1$

素因数の和:36785

約数の個数: 24

約数和(自身を含む): 40144104

約数和(自身を除く): 18638919

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 36761, 110283, 183805, 330849, 477893, 551415, 1433679, 1654245, 2389465, 4301037, 7168395, 21505185]

約数ペア:

[(1, 21505185), (3, 7168395), (5, 4301037), (9, 2389465), (13, 1654245), (15, 1433679), (39, 551415), (45, 477893), (65, 330849), (117, 183805), (195, 110283), (585, 36761)]