21619755

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11173}}^1$

素因数の和:11227

約数の個数: 24

約数和(自身を含む): 38349168

約数和(自身を除く): 16729413

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 11173, 33519, 55865, 100557, 167595, 480439, 502785, 1441317, 2402195, 4323951, 7206585, 21619755]

約数ペア:

[(1, 21619755), (3, 7206585), (5, 4323951), (9, 2402195), (15, 1441317), (43, 502785), (45, 480439), (129, 167595), (215, 100557), (387, 55865), (645, 33519), (1935, 11173)]