158560

素因数分解:

$2^5\times 5^1\times {\mathrm{991}}^1$

素因数の和:1006

約数の個数: 24

約数和(自身を含む): 374976

約数和(自身を除く): 216416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 991, 1982, 3964, 4955, 7928, 9910, 15856, 19820, 31712, 39640, 79280, 158560]

約数ペア:

[(1, 158560), (2, 79280), (4, 39640), (5, 31712), (8, 19820), (10, 15856), (16, 9910), (20, 7928), (32, 4955), (40, 3964), (80, 1982), (160, 991)]