21339515

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{1913}}^1$

素因数の和:2038

約数の個数: 16

約数和(自身を含む): 27010368

約数和(自身を除く): 5670853

約数列:

[1, 5, 23, 97, 115, 485, 1913, 2231, 9565, 11155, 43999, 185561, 219995, 927805, 4267903, 21339515]

約数ペア:

[(1, 21339515), (5, 4267903), (23, 927805), (97, 219995), (115, 185561), (485, 43999), (1913, 11155), (2231, 9565)]