123219520

素因数分解:

$2^6\times 5^1\times {\mathrm{419}}^1\times {\mathrm{919}}^1$

素因数の和:1355

約数の個数: 56

約数和(自身を含む): 294436800

約数和(自身を除く): 171217280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 419, 838, 919, 1676, 1838, 2095, 3352, 3676, 4190, 4595, 6704, 7352, 8380, 9190, 13408, 14704, 16760, 18380, 26816, 29408, 33520, 36760, 58816, 67040, 73520, 134080, 147040, 294080, 385061, 770122, 1540244, 1925305, 3080488, 3850610, 6160976, 7701220, 12321952, 15402440, 24643904, 30804880, 61609760, 123219520]

約数ペア:

[(1, 123219520), (2, 61609760), (4, 30804880), (5, 24643904), (8, 15402440), (10, 12321952), (16, 7701220), (20, 6160976), (32, 3850610), (40, 3080488), (64, 1925305), (80, 1540244), (160, 770122), (320, 385061), (419, 294080), (838, 147040), (919, 134080), (1676, 73520), (1838, 67040), (2095, 58816), (3352, 36760), (3676, 33520), (4190, 29408), (4595, 26816), (6704, 18380), (7352, 16760), (8380, 14704), (9190, 13408)]