81966280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{1741}}^1$

素因数の和:1870

約数の個数: 64

約数和(自身を含む): 203186880

約数和(自身を除く): 121220600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 107, 110, 214, 220, 428, 440, 535, 856, 1070, 1177, 1741, 2140, 2354, 3482, 4280, 4708, 5885, 6964, 8705, 9416, 11770, 13928, 17410, 19151, 23540, 34820, 38302, 47080, 69640, 76604, 95755, 153208, 186287, 191510, 372574, 383020, 745148, 766040, 931435, 1490296, 1862870, 2049157, 3725740, 4098314, 7451480, 8196628, 10245785, 16393256, 20491570, 40983140, 81966280]

約数ペア:

[(1, 81966280), (2, 40983140), (4, 20491570), (5, 16393256), (8, 10245785), (10, 8196628), (11, 7451480), (20, 4098314), (22, 3725740), (40, 2049157), (44, 1862870), (55, 1490296), (88, 931435), (107, 766040), (110, 745148), (214, 383020), (220, 372574), (428, 191510), (440, 186287), (535, 153208), (856, 95755), (1070, 76604), (1177, 69640), (1741, 47080), (2140, 38302), (2354, 34820), (3482, 23540), (4280, 19151), (4708, 17410), (5885, 13928), (6964, 11770), (8705, 9416)]