20849517

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 34856640

約数和(自身を除く): 14007123

約数列:

[1, 3, 9, 13, 19, 39, 57, 83, 113, 117, 171, 247, 249, 339, 741, 747, 1017, 1079, 1469, 1577, 2147, 2223, 3237, 4407, 4731, 6441, 9379, 9711, 13221, 14193, 19323, 20501, 27911, 28137, 61503, 83733, 84411, 121927, 178201, 184509, 251199, 365781, 534603, 1097343, 1603809, 2316613, 6949839, 20849517]

約数ペア:

[(1, 20849517), (3, 6949839), (9, 2316613), (13, 1603809), (19, 1097343), (39, 534603), (57, 365781), (83, 251199), (113, 184509), (117, 178201), (171, 121927), (247, 84411), (249, 83733), (339, 61503), (741, 28137), (747, 27911), (1017, 20501), (1079, 19323), (1469, 14193), (1577, 13221), (2147, 9711), (2223, 9379), (3237, 6441), (4407, 4731)]