315079120

素因数分解:

$2^4\times 5^1\times {\mathrm{3938489}}^1$

素因数の和:3938502

約数の個数: 20

約数和(自身を含む): 732559140

約数和(自身を除く): 417480020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3938489, 7876978, 15753956, 19692445, 31507912, 39384890, 63015824, 78769780, 157539560, 315079120]

約数ペア:

[(1, 315079120), (2, 157539560), (4, 78769780), (5, 63015824), (8, 39384890), (10, 31507912), (16, 19692445), (20, 15753956), (40, 7876978), (80, 3938489)]