317120

素因数分解:

$2^6\times 5^1\times {\mathrm{991}}^1$

素因数の和:1008

約数の個数: 28

約数和(自身を含む): 755904

約数和(自身を除く): 438784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 991, 1982, 3964, 4955, 7928, 9910, 15856, 19820, 31712, 39640, 63424, 79280, 158560, 317120]

約数ペア:

[(1, 317120), (2, 158560), (4, 79280), (5, 63424), (8, 39640), (10, 31712), (16, 19820), (20, 15856), (32, 9910), (40, 7928), (64, 4955), (80, 3964), (160, 1982), (320, 991)]