21162680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6871}}^1$

素因数の和:6900

約数の個数: 64

約数和(自身を含む): 59374080

約数和(自身を除く): 38211400

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6871, 13742, 27484, 34355, 48097, 54968, 68710, 75581, 96194, 137420, 151162, 192388, 240485, 274840, 302324, 377905, 384776, 480970, 529067, 604648, 755810, 961940, 1058134, 1511620, 1923880, 2116268, 2645335, 3023240, 4232536, 5290670, 10581340, 21162680]

約数ペア:

[(1, 21162680), (2, 10581340), (4, 5290670), (5, 4232536), (7, 3023240), (8, 2645335), (10, 2116268), (11, 1923880), (14, 1511620), (20, 1058134), (22, 961940), (28, 755810), (35, 604648), (40, 529067), (44, 480970), (55, 384776), (56, 377905), (70, 302324), (77, 274840), (88, 240485), (110, 192388), (140, 151162), (154, 137420), (220, 96194), (280, 75581), (308, 68710), (385, 54968), (440, 48097), (616, 34355), (770, 27484), (1540, 13742), (3080, 6871)]