19745120

素因数分解:

$2^5\times 5^1\times {\mathrm{123407}}^1$

素因数の和:123422

約数の個数: 24

約数和(自身を含む): 46648224

約数和(自身を除く): 26903104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 123407, 246814, 493628, 617035, 987256, 1234070, 1974512, 2468140, 3949024, 4936280, 9872560, 19745120]

約数ペア:

[(1, 19745120), (2, 9872560), (4, 4936280), (5, 3949024), (8, 2468140), (10, 1974512), (16, 1234070), (20, 987256), (32, 617035), (40, 493628), (80, 246814), (160, 123407)]