21396095

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3797}}^1$

素因数の和:3839

約数の個数: 24

約数和(自身を含む): 31173984

約数和(自身を除く): 9777889

約数列:

[1, 5, 7, 23, 35, 49, 115, 161, 245, 805, 1127, 3797, 5635, 18985, 26579, 87331, 132895, 186053, 436655, 611317, 930265, 3056585, 4279219, 21396095]

約数ペア:

[(1, 21396095), (5, 4279219), (7, 3056585), (23, 930265), (35, 611317), (49, 436655), (115, 186053), (161, 132895), (245, 87331), (805, 26579), (1127, 18985), (3797, 5635)]