81660784

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{6247}}^1$

素因数の和:6317

約数の個数: 40

約数和(自身を含む): 170445440

約数和(自身を除く): 88784656

約数列:

[1, 2, 4, 8, 16, 19, 38, 43, 76, 86, 152, 172, 304, 344, 688, 817, 1634, 3268, 6247, 6536, 12494, 13072, 24988, 49976, 99952, 118693, 237386, 268621, 474772, 537242, 949544, 1074484, 1899088, 2148968, 4297936, 5103799, 10207598, 20415196, 40830392, 81660784]

約数ペア:

[(1, 81660784), (2, 40830392), (4, 20415196), (8, 10207598), (16, 5103799), (19, 4297936), (38, 2148968), (43, 1899088), (76, 1074484), (86, 949544), (152, 537242), (172, 474772), (304, 268621), (344, 237386), (688, 118693), (817, 99952), (1634, 49976), (3268, 24988), (6247, 13072), (6536, 12494)]