78047920

素因数分解:

$2^4\times 5^1\times {\mathrm{975599}}^1$

素因数の和:975612

約数の個数: 20

約数和(自身を含む): 181461600

約数和(自身を除く): 103413680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 975599, 1951198, 3902396, 4877995, 7804792, 9755990, 15609584, 19511980, 39023960, 78047920]

約数ペア:

[(1, 78047920), (2, 39023960), (4, 19511980), (5, 15609584), (8, 9755990), (10, 7804792), (16, 4877995), (20, 3902396), (40, 1951198), (80, 975599)]