80344840

素因数分解:

$2^3\times 5^1\times {\mathrm{2008621}}^1$

素因数の和:2008632

約数の個数: 16

約数和(自身を含む): 180775980

約数和(自身を除く): 100431140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2008621, 4017242, 8034484, 10043105, 16068968, 20086210, 40172420, 80344840]

約数ペア:

[(1, 80344840), (2, 40172420), (4, 20086210), (5, 16068968), (8, 10043105), (10, 8034484), (20, 4017242), (40, 2008621)]