161490640

素因数分解:

$2^4\times 5^1\times {\mathrm{2018633}}^1$

素因数の和:2018646

約数の個数: 20

約数和(自身を含む): 375465924

約数和(自身を除く): 213975284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2018633, 4037266, 8074532, 10093165, 16149064, 20186330, 32298128, 40372660, 80745320, 161490640]

約数ペア:

[(1, 161490640), (2, 80745320), (4, 40372660), (5, 32298128), (8, 20186330), (10, 16149064), (16, 10093165), (20, 8074532), (40, 4037266), (80, 2018633)]