20691258

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{4783}}^1$

素因数の和:4898

約数の個数: 32

約数和(自身を含む): 47763456

約数和(自身を除く): 27072198

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 103, 206, 309, 618, 721, 1442, 2163, 4326, 4783, 9566, 14349, 28698, 33481, 66962, 100443, 200886, 492649, 985298, 1477947, 2955894, 3448543, 6897086, 10345629, 20691258]

約数ペア:

[(1, 20691258), (2, 10345629), (3, 6897086), (6, 3448543), (7, 2955894), (14, 1477947), (21, 985298), (42, 492649), (103, 200886), (206, 100443), (309, 66962), (618, 33481), (721, 28698), (1442, 14349), (2163, 9566), (4326, 4783)]