157819280

素因数分解:

$2^4\times 5^1\times {\mathrm{1972741}}^1$

素因数の和:1972754

約数の個数: 20

約数和(自身を含む): 366930012

約数和(自身を除く): 209110732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1972741, 3945482, 7890964, 9863705, 15781928, 19727410, 31563856, 39454820, 78909640, 157819280]

約数ペア:

[(1, 157819280), (2, 78909640), (4, 39454820), (5, 31563856), (8, 19727410), (10, 15781928), (16, 9863705), (20, 7890964), (40, 3945482), (80, 1972741)]