128215850

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{887}}^1$

素因数の和:972

約数の個数: 72

約数和(自身を含む): 282437280

約数和(自身を除く): 154221430

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 59, 70, 98, 118, 175, 245, 295, 350, 413, 490, 590, 826, 887, 1225, 1475, 1774, 2065, 2450, 2891, 2950, 4130, 4435, 5782, 6209, 8870, 10325, 12418, 14455, 20650, 22175, 28910, 31045, 43463, 44350, 52333, 62090, 72275, 86926, 104666, 144550, 155225, 217315, 261665, 310450, 366331, 434630, 523330, 732662, 1086575, 1308325, 1831655, 2173150, 2564317, 2616650, 3663310, 5128634, 9158275, 12821585, 18316550, 25643170, 64107925, 128215850]

約数ペア:

[(1, 128215850), (2, 64107925), (5, 25643170), (7, 18316550), (10, 12821585), (14, 9158275), (25, 5128634), (35, 3663310), (49, 2616650), (50, 2564317), (59, 2173150), (70, 1831655), (98, 1308325), (118, 1086575), (175, 732662), (245, 523330), (295, 434630), (350, 366331), (413, 310450), (490, 261665), (590, 217315), (826, 155225), (887, 144550), (1225, 104666), (1475, 86926), (1774, 72275), (2065, 62090), (2450, 52333), (2891, 44350), (2950, 43463), (4130, 31045), (4435, 28910), (5782, 22175), (6209, 20650), (8870, 14455), (10325, 12418)]