21047391

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{19013}}^1$

素因数の和:19063

約数の個数: 16

約数和(自身を含む): 31943520

約数和(自身を除く): 10896129

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 19013, 57039, 171117, 513351, 779533, 2338599, 7015797, 21047391]

約数ペア:

[(1, 21047391), (3, 7015797), (9, 2338599), (27, 779533), (41, 513351), (123, 171117), (369, 57039), (1107, 19013)]