39884840

素因数分解:

$2^3\times 5^1\times {\mathrm{997121}}^1$

素因数の和:997132

約数の個数: 16

約数和(自身を含む): 89740980

約数和(自身を除く): 49856140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997121, 1994242, 3988484, 4985605, 7976968, 9971210, 19942420, 39884840]

約数ペア:

[(1, 39884840), (2, 19942420), (4, 9971210), (5, 7976968), (8, 4985605), (10, 3988484), (20, 1994242), (40, 997121)]