20806772

素因数分解:

$2^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1279}}^1$

素因数の和:1380

約数の個数: 36

約数和(自身を含む): 42900480

約数和(自身を除く): 22093708

約数列:

[1, 2, 4, 7, 14, 28, 49, 83, 98, 166, 196, 332, 581, 1162, 1279, 2324, 2558, 4067, 5116, 8134, 8953, 16268, 17906, 35812, 62671, 106157, 125342, 212314, 250684, 424628, 743099, 1486198, 2972396, 5201693, 10403386, 20806772]

約数ペア:

[(1, 20806772), (2, 10403386), (4, 5201693), (7, 2972396), (14, 1486198), (28, 743099), (49, 424628), (83, 250684), (98, 212314), (166, 125342), (196, 106157), (332, 62671), (581, 35812), (1162, 17906), (1279, 16268), (2324, 8953), (2558, 8134), (4067, 5116)]