21505946

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1913}}^1$

素因数の和:2006

約数の個数: 32

約数和(自身を含む): 40791168

約数和(自身を除く): 19285222

約数列:

[1, 2, 7, 11, 14, 22, 73, 77, 146, 154, 511, 803, 1022, 1606, 1913, 3826, 5621, 11242, 13391, 21043, 26782, 42086, 139649, 147301, 279298, 294602, 977543, 1536139, 1955086, 3072278, 10752973, 21505946]

約数ペア:

[(1, 21505946), (2, 10752973), (7, 3072278), (11, 1955086), (14, 1536139), (22, 977543), (73, 294602), (77, 279298), (146, 147301), (154, 139649), (511, 42086), (803, 26782), (1022, 21043), (1606, 13391), (1913, 11242), (3826, 5621)]