168861520

素因数分解:

$2^4\times 5^1\times {\mathrm{2110769}}^1$

素因数の和:2110782

約数の個数: 20

約数和(自身を含む): 392603220

約数和(自身を除く): 223741700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2110769, 4221538, 8443076, 10553845, 16886152, 21107690, 33772304, 42215380, 84430760, 168861520]

約数ペア:

[(1, 168861520), (2, 84430760), (4, 42215380), (5, 33772304), (8, 21107690), (10, 16886152), (16, 10553845), (20, 8443076), (40, 4221538), (80, 2110769)]