20218527

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^2\times {\mathrm{127}}^1$

素因数の和:185

約数の個数: 54

約数和(自身を含む): 36137088

約数和(自身を除く): 15918561

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 127, 133, 147, 171, 361, 381, 399, 441, 889, 931, 1083, 1143, 1197, 2413, 2527, 2667, 2793, 3249, 6223, 7239, 7581, 8001, 8379, 16891, 17689, 18669, 21717, 22743, 45847, 50673, 53067, 56007, 118237, 137541, 152019, 159201, 320929, 354711, 412623, 962787, 1064133, 2246503, 2888361, 6739509, 20218527]

約数ペア:

[(1, 20218527), (3, 6739509), (7, 2888361), (9, 2246503), (19, 1064133), (21, 962787), (49, 412623), (57, 354711), (63, 320929), (127, 159201), (133, 152019), (147, 137541), (171, 118237), (361, 56007), (381, 53067), (399, 50673), (441, 45847), (889, 22743), (931, 21717), (1083, 18669), (1143, 17689), (1197, 16891), (2413, 8379), (2527, 8001), (2667, 7581), (2793, 7239), (3249, 6223)]