1285900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 3499776

約数和(自身を除く): 2213876

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 77, 100, 110, 140, 154, 167, 175, 220, 275, 308, 334, 350, 385, 550, 668, 700, 770, 835, 1100, 1169, 1540, 1670, 1837, 1925, 2338, 3340, 3674, 3850, 4175, 4676, 5845, 7348, 7700, 8350, 9185, 11690, 12859, 16700, 18370, 23380, 25718, 29225, 36740, 45925, 51436, 58450, 64295, 91850, 116900, 128590, 183700, 257180, 321475, 642950, 1285900]

約数ペア:

[(1, 1285900), (2, 642950), (4, 321475), (5, 257180), (7, 183700), (10, 128590), (11, 116900), (14, 91850), (20, 64295), (22, 58450), (25, 51436), (28, 45925), (35, 36740), (44, 29225), (50, 25718), (55, 23380), (70, 18370), (77, 16700), (100, 12859), (110, 11690), (140, 9185), (154, 8350), (167, 7700), (175, 7348), (220, 5845), (275, 4676), (308, 4175), (334, 3850), (350, 3674), (385, 3340), (550, 2338), (668, 1925), (700, 1837), (770, 1670), (835, 1540), (1100, 1169)]