2881340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1871}}^1$

素因数の和:1898

約数の個数: 48

約数和(自身を含む): 7547904

約数和(自身を除く): 4666564

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 1871, 3742, 7484, 9355, 13097, 18710, 20581, 26194, 37420, 41162, 52388, 65485, 82324, 102905, 130970, 144067, 205810, 261940, 288134, 411620, 576268, 720335, 1440670, 2881340]

約数ペア:

[(1, 2881340), (2, 1440670), (4, 720335), (5, 576268), (7, 411620), (10, 288134), (11, 261940), (14, 205810), (20, 144067), (22, 130970), (28, 102905), (35, 82324), (44, 65485), (55, 52388), (70, 41162), (77, 37420), (110, 26194), (140, 20581), (154, 18710), (220, 13097), (308, 9355), (385, 7484), (770, 3742), (1540, 1871)]