2581040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{419}}^1$

素因数の和:450

約数の個数: 80

約数和(自身を含む): 7499520

約数和(自身を除く): 4918480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 419, 440, 560, 616, 770, 838, 880, 1232, 1540, 1676, 2095, 2933, 3080, 3352, 4190, 4609, 5866, 6160, 6704, 8380, 9218, 11732, 14665, 16760, 18436, 23045, 23464, 29330, 32263, 33520, 36872, 46090, 46928, 58660, 64526, 73744, 92180, 117320, 129052, 161315, 184360, 234640, 258104, 322630, 368720, 516208, 645260, 1290520, 2581040]

約数ペア:

[(1, 2581040), (2, 1290520), (4, 645260), (5, 516208), (7, 368720), (8, 322630), (10, 258104), (11, 234640), (14, 184360), (16, 161315), (20, 129052), (22, 117320), (28, 92180), (35, 73744), (40, 64526), (44, 58660), (55, 46928), (56, 46090), (70, 36872), (77, 33520), (80, 32263), (88, 29330), (110, 23464), (112, 23045), (140, 18436), (154, 16760), (176, 14665), (220, 11732), (280, 9218), (308, 8380), (385, 6704), (419, 6160), (440, 5866), (560, 4609), (616, 4190), (770, 3352), (838, 3080), (880, 2933), (1232, 2095), (1540, 1676)]