21258578

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{42013}}^1$

素因数の和:42049

約数の個数: 16

約数和(自身を含む): 36300096

約数和(自身を除く): 15041518

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 42013, 84026, 462143, 924286, 966299, 1932598, 10629289, 21258578]

約数ペア:

[(1, 21258578), (2, 10629289), (11, 1932598), (22, 966299), (23, 924286), (46, 462143), (253, 84026), (506, 42013)]