78079880

素因数分解:

$2^3\times 5^1\times {\mathrm{1951997}}^1$

素因数の和:1952008

約数の個数: 16

約数和(自身を含む): 175679820

約数和(自身を除く): 97599940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1951997, 3903994, 7807988, 9759985, 15615976, 19519970, 39039940, 78079880]

約数ペア:

[(1, 78079880), (2, 39039940), (4, 19519970), (5, 15615976), (8, 9759985), (10, 7807988), (20, 3903994), (40, 1951997)]