78560

素因数分解:

$2^5\times 5^1\times {\mathrm{491}}^1$

素因数の和:506

約数の個数: 24

約数和(自身を含む): 185976

約数和(自身を除く): 107416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 491, 982, 1964, 2455, 3928, 4910, 7856, 9820, 15712, 19640, 39280, 78560]

約数ペア:

[(1, 78560), (2, 39280), (4, 19640), (5, 15712), (8, 9820), (10, 7856), (16, 4910), (20, 3928), (32, 2455), (40, 1964), (80, 982), (160, 491)]