80398990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{8263}}^1$

素因数の和:8416

約数の個数: 32

約数和(自身を含む): 166602240

約数和(自身を除く): 86203250

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 139, 278, 695, 973, 1390, 1946, 4865, 8263, 9730, 16526, 41315, 57841, 82630, 115682, 289205, 578410, 1148557, 2297114, 5742785, 8039899, 11485570, 16079798, 40199495, 80398990]

約数ペア:

[(1, 80398990), (2, 40199495), (5, 16079798), (7, 11485570), (10, 8039899), (14, 5742785), (35, 2297114), (70, 1148557), (139, 578410), (278, 289205), (695, 115682), (973, 82630), (1390, 57841), (1946, 41315), (4865, 16526), (8263, 9730)]