890245040

素因数分解:

$2^4\times 5^1\times {\mathrm{11128063}}^1$

素因数の和:11128076

約数の個数: 20

約数和(自身を含む): 2069819904

約数和(自身を除く): 1179574864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 11128063, 22256126, 44512252, 55640315, 89024504, 111280630, 178049008, 222561260, 445122520, 890245040]

約数ペア:

[(1, 890245040), (2, 445122520), (4, 222561260), (5, 178049008), (8, 111280630), (10, 89024504), (16, 55640315), (20, 44512252), (40, 22256126), (80, 11128063)]