19729760

素因数分解:

$2^5\times 5^1\times {\mathrm{123311}}^1$

素因数の和:123326

約数の個数: 24

約数和(自身を含む): 46611936

約数和(自身を除く): 26882176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 123311, 246622, 493244, 616555, 986488, 1233110, 1972976, 2466220, 3945952, 4932440, 9864880, 19729760]

約数ペア:

[(1, 19729760), (2, 9864880), (4, 4932440), (5, 3945952), (8, 2466220), (10, 1972976), (16, 1233110), (20, 986488), (32, 616555), (40, 493244), (80, 246622), (160, 123311)]