81970640

素因数分解:

$2^4\times 5^1\times {\mathrm{1024633}}^1$

素因数の和:1024646

約数の個数: 20

約数和(自身を含む): 190581924

約数和(自身を除く): 108611284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1024633, 2049266, 4098532, 5123165, 8197064, 10246330, 16394128, 20492660, 40985320, 81970640]

約数ペア:

[(1, 81970640), (2, 40985320), (4, 20492660), (5, 16394128), (8, 10246330), (10, 8197064), (16, 5123165), (20, 4098532), (40, 2049266), (80, 1024633)]