18300321

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2203}}^1$

素因数の和:2293

約数の個数: 24

約数和(自身を含む): 28881216

約数和(自身を除く): 10580895

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2203, 2769, 6609, 8307, 19827, 28639, 85917, 156413, 257751, 469239, 1407717, 2033369, 6100107, 18300321]

約数ペア:

[(1, 18300321), (3, 6100107), (9, 2033369), (13, 1407717), (39, 469239), (71, 257751), (117, 156413), (213, 85917), (639, 28639), (923, 19827), (2203, 8307), (2769, 6609)]