21066782

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:632

約数の個数: 32

約数和(自身を含む): 36720000

約数和(自身を除く): 15653218

約数列:

[1, 2, 11, 19, 22, 38, 101, 202, 209, 418, 499, 998, 1111, 1919, 2222, 3838, 5489, 9481, 10978, 18962, 21109, 42218, 50399, 100798, 104291, 208582, 554389, 957581, 1108778, 1915162, 10533391, 21066782]

約数ペア:

[(1, 21066782), (2, 10533391), (11, 1915162), (19, 1108778), (22, 957581), (38, 554389), (101, 208582), (202, 104291), (209, 100798), (418, 50399), (499, 42218), (998, 21109), (1111, 18962), (1919, 10978), (2222, 9481), (3838, 5489)]