21318605

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{55373}}^1$

素因数の和:55396

約数の個数: 16

約数和(自身を含む): 31895424

約数和(自身を除く): 10576819

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 55373, 276865, 387611, 609103, 1938055, 3045515, 4263721, 21318605]

約数ペア:

[(1, 21318605), (5, 4263721), (7, 3045515), (11, 1938055), (35, 609103), (55, 387611), (77, 276865), (385, 55373)]