78160

素因数分解:

$2^4\times 5^1\times {\mathrm{977}}^1$

素因数の和:990

約数の個数: 20

約数和(自身を含む): 181908

約数和(自身を除く): 103748

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 977, 1954, 3908, 4885, 7816, 9770, 15632, 19540, 39080, 78160]

約数ペア:

[(1, 78160), (2, 39080), (4, 19540), (5, 15632), (8, 9770), (10, 7816), (16, 4885), (20, 3908), (40, 1954), (80, 977)]