20742964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 21189836

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 103, 199, 206, 253, 398, 412, 506, 796, 1012, 1133, 2189, 2266, 2369, 4378, 4532, 4577, 4738, 8756, 9154, 9476, 18308, 20497, 26059, 40994, 50347, 52118, 81988, 100694, 104236, 201388, 225467, 450934, 471431, 901868, 942862, 1885724, 5185741, 10371482, 20742964]

約数ペア:

[(1, 20742964), (2, 10371482), (4, 5185741), (11, 1885724), (22, 942862), (23, 901868), (44, 471431), (46, 450934), (92, 225467), (103, 201388), (199, 104236), (206, 100694), (253, 81988), (398, 52118), (412, 50347), (506, 40994), (796, 26059), (1012, 20497), (1133, 18308), (2189, 9476), (2266, 9154), (2369, 8756), (4378, 4738), (4532, 4577)]