19828280

素因数分解:

$2^3\times 5^1\times {\mathrm{495707}}^1$

素因数の和:495718

約数の個数: 16

約数和(自身を含む): 44613720

約数和(自身を除く): 24785440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 495707, 991414, 1982828, 2478535, 3965656, 4957070, 9914140, 19828280]

約数ペア:

[(1, 19828280), (2, 9914140), (4, 4957070), (5, 3965656), (8, 2478535), (10, 1982828), (20, 991414), (40, 495707)]