2018839280

素因数分解:

$2^4\times 5^1\times {\mathrm{25235491}}^1$

素因数の和:25235504

約数の個数: 20

約数和(自身を含む): 4693801512

約数和(自身を除く): 2674962232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25235491, 50470982, 100941964, 126177455, 201883928, 252354910, 403767856, 504709820, 1009419640, 2018839280]

約数ペア:

[(1, 2018839280), (2, 1009419640), (4, 504709820), (5, 403767856), (8, 252354910), (10, 201883928), (16, 126177455), (20, 100941964), (40, 50470982), (80, 25235491)]