21696818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{709}}^1$

素因数の和:842

約数の個数: 32

約数和(自身を含む): 38646720

約数和(自身を除く): 16949902

約数列:

[1, 2, 11, 13, 22, 26, 107, 143, 214, 286, 709, 1177, 1391, 1418, 2354, 2782, 7799, 9217, 15301, 15598, 18434, 30602, 75863, 101387, 151726, 202774, 834493, 986219, 1668986, 1972438, 10848409, 21696818]

約数ペア:

[(1, 21696818), (2, 10848409), (11, 1972438), (13, 1668986), (22, 986219), (26, 834493), (107, 202774), (143, 151726), (214, 101387), (286, 75863), (709, 30602), (1177, 18434), (1391, 15598), (1418, 15301), (2354, 9217), (2782, 7799)]