20988044

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{821}}^1$

素因数の和:926

約数の個数: 48

約数和(自身を含む): 46400256

約数和(自身を除く): 25412212

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 83, 154, 166, 308, 332, 581, 821, 913, 1162, 1642, 1826, 2324, 3284, 3652, 5747, 6391, 9031, 11494, 12782, 18062, 22988, 25564, 36124, 63217, 68143, 126434, 136286, 252868, 272572, 477001, 749573, 954002, 1499146, 1908004, 2998292, 5247011, 10494022, 20988044]

約数ペア:

[(1, 20988044), (2, 10494022), (4, 5247011), (7, 2998292), (11, 1908004), (14, 1499146), (22, 954002), (28, 749573), (44, 477001), (77, 272572), (83, 252868), (154, 136286), (166, 126434), (308, 68143), (332, 63217), (581, 36124), (821, 25564), (913, 22988), (1162, 18062), (1642, 12782), (1826, 11494), (2324, 9031), (3284, 6391), (3652, 5747)]