20692847

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 32

約数和(自身を含む): 26188800

約数和(自身を除く): 5495953

約数列:

[1, 7, 23, 43, 49, 61, 161, 301, 343, 427, 989, 1127, 1403, 2107, 2623, 2989, 6923, 7889, 9821, 14749, 18361, 20923, 48461, 60329, 68747, 128527, 339227, 422303, 481229, 899689, 2956121, 20692847]

約数ペア:

[(1, 20692847), (7, 2956121), (23, 899689), (43, 481229), (49, 422303), (61, 339227), (161, 128527), (301, 68747), (343, 60329), (427, 48461), (989, 20923), (1127, 18361), (1403, 14749), (2107, 9821), (2623, 7889), (2989, 6923)]