20317556

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4507}}^1$

素因数の和:4548

約数の個数: 36

約数和(自身を含む): 43168608

約数和(自身を除く): 22851052

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4507, 4508, 9014, 18028, 31549, 63098, 103661, 126196, 207322, 220843, 414644, 441686, 725627, 883372, 1451254, 2902508, 5079389, 10158778, 20317556]

約数ペア:

[(1, 20317556), (2, 10158778), (4, 5079389), (7, 2902508), (14, 1451254), (23, 883372), (28, 725627), (46, 441686), (49, 414644), (92, 220843), (98, 207322), (161, 126196), (196, 103661), (322, 63098), (644, 31549), (1127, 18028), (2254, 9014), (4507, 4508)]