20408265

素因数分解:

$3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3571}}^1$

素因数の和:3709

約数の個数: 24

約数和(自身を含む): 35662848

約数和(自身を除く): 15254583

約数列:

[1, 3, 5, 9, 15, 45, 127, 381, 635, 1143, 1905, 3571, 5715, 10713, 17855, 32139, 53565, 160695, 453517, 1360551, 2267585, 4081653, 6802755, 20408265]

約数ペア:

[(1, 20408265), (3, 6802755), (5, 4081653), (9, 2267585), (15, 1360551), (45, 453517), (127, 160695), (381, 53565), (635, 32139), (1143, 17855), (1905, 10713), (3571, 5715)]