388636280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{183319}}^1$

素因数の和:183383

約数の個数: 32

約数和(自身を含む): 890935200

約数和(自身を除く): 502298920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 183319, 366638, 733276, 916595, 1466552, 1833190, 3666380, 7332760, 9715907, 19431814, 38863628, 48579535, 77727256, 97159070, 194318140, 388636280]

約数ペア:

[(1, 388636280), (2, 194318140), (4, 97159070), (5, 77727256), (8, 48579535), (10, 38863628), (20, 19431814), (40, 9715907), (53, 7332760), (106, 3666380), (212, 1833190), (265, 1466552), (424, 916595), (530, 733276), (1060, 366638), (2120, 183319)]