20420685

素因数分解:

$3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4493}}^1$

素因数の和:4605

約数の個数: 24

約数和(自身を含む): 35754264

約数和(自身を除く): 15333579

約数列:

[1, 3, 5, 9, 15, 45, 101, 303, 505, 909, 1515, 4493, 4545, 13479, 22465, 40437, 67395, 202185, 453793, 1361379, 2268965, 4084137, 6806895, 20420685]

約数ペア:

[(1, 20420685), (3, 6806895), (5, 4084137), (9, 2268965), (15, 1361379), (45, 453793), (101, 202185), (303, 67395), (505, 40437), (909, 22465), (1515, 13479), (4493, 4545)]