21467277

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 36324288

約数和(自身を除く): 14857011

約数列:

[1, 3, 9, 13, 17, 39, 43, 51, 117, 129, 153, 221, 251, 387, 559, 663, 731, 753, 1677, 1989, 2193, 2259, 3263, 4267, 5031, 6579, 9503, 9789, 10793, 12801, 28509, 29367, 32379, 38403, 55471, 85527, 97137, 140309, 166413, 183481, 420927, 499239, 550443, 1262781, 1651329, 2385253, 7155759, 21467277]

約数ペア:

[(1, 21467277), (3, 7155759), (9, 2385253), (13, 1651329), (17, 1262781), (39, 550443), (43, 499239), (51, 420927), (117, 183481), (129, 166413), (153, 140309), (221, 97137), (251, 85527), (387, 55471), (559, 38403), (663, 32379), (731, 29367), (753, 28509), (1677, 12801), (1989, 10793), (2193, 9789), (2259, 9503), (3263, 6579), (4267, 5031)]