21906135

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11321}}^1$

素因数の和:11375

約数の個数: 24

約数和(自身を含む): 38857104

約数和(自身を除く): 16950969

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 11321, 33963, 56605, 101889, 169815, 486803, 509445, 1460409, 2434015, 4381227, 7302045, 21906135]

約数ペア:

[(1, 21906135), (3, 7302045), (5, 4381227), (9, 2434015), (15, 1460409), (43, 509445), (45, 486803), (129, 169815), (215, 101889), (387, 56605), (645, 33963), (1935, 11321)]