20993924

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{10271}}^1$

素因数の和:10355

約数の個数: 24

約数和(自身を含む): 42567168

約数和(自身を除く): 21573244

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 10271, 20542, 41084, 71897, 143794, 287588, 749783, 1499566, 2999132, 5248481, 10496962, 20993924]

約数ペア:

[(1, 20993924), (2, 10496962), (4, 5248481), (7, 2999132), (14, 1499566), (28, 749783), (73, 287588), (146, 143794), (292, 71897), (511, 41084), (1022, 20542), (2044, 10271)]