19998328

素因数分解:

$2^3\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1973}}^1$

素因数の和:2167

約数の個数: 32

約数和(自身を含む): 43112160

約数和(自身を除く): 23113832

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 181, 362, 724, 1267, 1448, 1973, 2534, 3946, 5068, 7892, 10136, 13811, 15784, 27622, 55244, 110488, 357113, 714226, 1428452, 2499791, 2856904, 4999582, 9999164, 19998328]

約数ペア:

[(1, 19998328), (2, 9999164), (4, 4999582), (7, 2856904), (8, 2499791), (14, 1428452), (28, 714226), (56, 357113), (181, 110488), (362, 55244), (724, 27622), (1267, 15784), (1448, 13811), (1973, 10136), (2534, 7892), (3946, 5068)]