20566040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1087}}^1$

素因数の和:1152

約数の個数: 64

約数和(自身を含む): 51701760

約数和(自身を除く): 31135720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1087, 1720, 1892, 2174, 2365, 3784, 4348, 4730, 5435, 8696, 9460, 10870, 11957, 18920, 21740, 23914, 43480, 46741, 47828, 59785, 93482, 95656, 119570, 186964, 233705, 239140, 373928, 467410, 478280, 514151, 934820, 1028302, 1869640, 2056604, 2570755, 4113208, 5141510, 10283020, 20566040]

約数ペア:

[(1, 20566040), (2, 10283020), (4, 5141510), (5, 4113208), (8, 2570755), (10, 2056604), (11, 1869640), (20, 1028302), (22, 934820), (40, 514151), (43, 478280), (44, 467410), (55, 373928), (86, 239140), (88, 233705), (110, 186964), (172, 119570), (215, 95656), (220, 93482), (344, 59785), (430, 47828), (440, 46741), (473, 43480), (860, 23914), (946, 21740), (1087, 18920), (1720, 11957), (1892, 10870), (2174, 9460), (2365, 8696), (3784, 5435), (4348, 4730)]