890221720

素因数分解:

$2^3\times 5^1\times {\mathrm{22255543}}^1$

素因数の和:22255554

約数の個数: 16

約数和(自身を含む): 2002998960

約数和(自身を除く): 1112777240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 22255543, 44511086, 89022172, 111277715, 178044344, 222555430, 445110860, 890221720]

約数ペア:

[(1, 890221720), (2, 445110860), (4, 222555430), (5, 178044344), (8, 111277715), (10, 89022172), (20, 44511086), (40, 22255543)]