20785858849

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{71789}}^1$

素因数の和:72133

約数の個数: 24

約数和(自身を含む): 25534267200

約数和(自身を除く): 4748408351

約数列:

[1, 7, 19, 49, 133, 311, 931, 2177, 5909, 15239, 41363, 71789, 289541, 502523, 1363991, 3517661, 9547937, 22326379, 66835559, 156284653, 424201201, 1093992571, 2969408407, 20785858849]

約数ペア:

[(1, 20785858849), (7, 2969408407), (19, 1093992571), (49, 424201201), (133, 156284653), (311, 66835559), (931, 22326379), (2177, 9547937), (5909, 3517661), (15239, 1363991), (41363, 502523), (71789, 289541)]