19828040

素因数分解:

$2^3\times 5^1\times {\mathrm{495701}}^1$

素因数の和:495712

約数の個数: 16

約数和(自身を含む): 44613180

約数和(自身を除く): 24785140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 495701, 991402, 1982804, 2478505, 3965608, 4957010, 9914020, 19828040]

約数ペア:

[(1, 19828040), (2, 9914020), (4, 4957010), (5, 3965608), (8, 2478505), (10, 1982804), (20, 991402), (40, 495701)]