19810760

素因数分解:

$2^3\times 5^1\times {\mathrm{495269}}^1$

素因数の和:495280

約数の個数: 16

約数和(自身を含む): 44574300

約数和(自身を除く): 24763540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 495269, 990538, 1981076, 2476345, 3962152, 4952690, 9905380, 19810760]

約数ペア:

[(1, 19810760), (2, 9905380), (4, 4952690), (5, 3962152), (8, 2476345), (10, 1981076), (20, 990538), (40, 495269)]