20199808280

素因数分解:

$2^3\times 5^1\times {\mathrm{504995207}}^1$

素因数の和:504995218

約数の個数: 16

約数和(自身を含む): 45449568720

約数和(自身を除く): 25249760440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504995207, 1009990414, 2019980828, 2524976035, 4039961656, 5049952070, 10099904140, 20199808280]

約数ペア:

[(1, 20199808280), (2, 10099904140), (4, 5049952070), (5, 4039961656), (8, 2524976035), (10, 2019980828), (20, 1009990414), (40, 504995207)]