27939280

素因数分解:

$2^4\times 5^1\times {\mathrm{349241}}^1$

素因数の和:349254

約数の個数: 20

約数和(自身を含む): 64959012

約数和(自身を除く): 37019732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349241, 698482, 1396964, 1746205, 2793928, 3492410, 5587856, 6984820, 13969640, 27939280]

約数ペア:

[(1, 27939280), (2, 13969640), (4, 6984820), (5, 5587856), (8, 3492410), (10, 2793928), (16, 1746205), (20, 1396964), (40, 698482), (80, 349241)]