81555520

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5927}}^1$

素因数の和:5987

約数の個数: 56

約数和(自身を含む): 198753984

約数和(自身を除く): 117198464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1720, 2752, 3440, 5927, 6880, 11854, 13760, 23708, 29635, 47416, 59270, 94832, 118540, 189664, 237080, 254861, 379328, 474160, 509722, 948320, 1019444, 1274305, 1896640, 2038888, 2548610, 4077776, 5097220, 8155552, 10194440, 16311104, 20388880, 40777760, 81555520]

約数ペア:

[(1, 81555520), (2, 40777760), (4, 20388880), (5, 16311104), (8, 10194440), (10, 8155552), (16, 5097220), (20, 4077776), (32, 2548610), (40, 2038888), (43, 1896640), (64, 1274305), (80, 1019444), (86, 948320), (160, 509722), (172, 474160), (215, 379328), (320, 254861), (344, 237080), (430, 189664), (688, 118540), (860, 94832), (1376, 59270), (1720, 47416), (2752, 29635), (3440, 23708), (5927, 13760), (6880, 11854)]