28156905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{89387}}^1$

素因数の和:89405

約数の個数: 24

約数和(自身を含む): 55778112

約数和(自身を除く): 27621207

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 89387, 268161, 446935, 625709, 804483, 1340805, 1877127, 3128545, 4022415, 5631381, 9385635, 28156905]

約数ペア:

[(1, 28156905), (3, 9385635), (5, 5631381), (7, 4022415), (9, 3128545), (15, 1877127), (21, 1340805), (35, 804483), (45, 625709), (63, 446935), (105, 268161), (315, 89387)]