31639640

素因数分解:

$2^3\times 5^1\times {\mathrm{790991}}^1$

素因数の和:791002

約数の個数: 16

約数和(自身を含む): 71189280

約数和(自身を除く): 39549640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 790991, 1581982, 3163964, 3954955, 6327928, 7909910, 15819820, 31639640]

約数ペア:

[(1, 31639640), (2, 15819820), (4, 7909910), (5, 6327928), (8, 3954955), (10, 3163964), (20, 1581982), (40, 790991)]