20549810

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1901}}^1$

素因数の和:1978

約数の個数: 32

約数和(自身を含む): 39439872

約数和(自身を除く): 18890062

約数列:

[1, 2, 5, 10, 23, 46, 47, 94, 115, 230, 235, 470, 1081, 1901, 2162, 3802, 5405, 9505, 10810, 19010, 43723, 87446, 89347, 178694, 218615, 437230, 446735, 893470, 2054981, 4109962, 10274905, 20549810]

約数ペア:

[(1, 20549810), (2, 10274905), (5, 4109962), (10, 2054981), (23, 893470), (46, 446735), (47, 437230), (94, 218615), (115, 178694), (230, 89347), (235, 87446), (470, 43723), (1081, 19010), (1901, 10810), (2162, 9505), (3802, 5405)]