19798120

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2861}}^1$

素因数の和:3045

約数の個数: 32

約数和(自身を含む): 44818920

約数和(自身を除く): 25020800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2861, 3460, 5722, 6920, 11444, 14305, 22888, 28610, 57220, 114440, 494953, 989906, 1979812, 2474765, 3959624, 4949530, 9899060, 19798120]

約数ペア:

[(1, 19798120), (2, 9899060), (4, 4949530), (5, 3959624), (8, 2474765), (10, 1979812), (20, 989906), (40, 494953), (173, 114440), (346, 57220), (692, 28610), (865, 22888), (1384, 14305), (1730, 11444), (2861, 6920), (3460, 5722)]