19856984

素因数分解:

$2^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2551}}^1$

素因数の和:2703

約数の個数: 32

約数和(自身を含む): 42873600

約数和(自身を除く): 23016616

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 2551, 3892, 5102, 7784, 10204, 17857, 20408, 35714, 71428, 142856, 354589, 709178, 1418356, 2482123, 2836712, 4964246, 9928492, 19856984]

約数ペア:

[(1, 19856984), (2, 9928492), (4, 4964246), (7, 2836712), (8, 2482123), (14, 1418356), (28, 709178), (56, 354589), (139, 142856), (278, 71428), (556, 35714), (973, 20408), (1112, 17857), (1946, 10204), (2551, 7784), (3892, 5102)]