66378819280

素因数分解:

$2^4\times 5^1\times {\mathrm{829735241}}^1$

素因数の和:829735254

約数の個数: 20

約数和(自身を含む): 154330755012

約数和(自身を除く): 87951935732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 829735241, 1659470482, 3318940964, 4148676205, 6637881928, 8297352410, 13275763856, 16594704820, 33189409640, 66378819280]

約数ペア:

[(1, 66378819280), (2, 33189409640), (4, 16594704820), (5, 13275763856), (8, 8297352410), (10, 6637881928), (16, 4148676205), (20, 3318940964), (40, 1659470482), (80, 829735241)]