21118636

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68567}}^1$

素因数の和:68589

約数の個数: 24

約数和(自身を含む): 46077696

約数和(自身を除く): 24959060

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68567, 137134, 274268, 479969, 754237, 959938, 1508474, 1919876, 3016948, 5279659, 10559318, 21118636]

約数ペア:

[(1, 21118636), (2, 10559318), (4, 5279659), (7, 3016948), (11, 1919876), (14, 1508474), (22, 959938), (28, 754237), (44, 479969), (77, 274268), (154, 137134), (308, 68567)]