156861520

素因数分解:

$2^4\times 5^1\times {\mathrm{1960769}}^1$

素因数の和:1960782

約数の個数: 20

約数和(自身を含む): 364703220

約数和(自身を除く): 207841700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1960769, 3921538, 7843076, 9803845, 15686152, 19607690, 31372304, 39215380, 78430760, 156861520]

約数ペア:

[(1, 156861520), (2, 78430760), (4, 39215380), (5, 31372304), (8, 19607690), (10, 15686152), (16, 9803845), (20, 7843076), (40, 3921538), (80, 1960769)]