890227640

素因数分解:

$2^3\times 5^1\times {\mathrm{22255691}}^1$

素因数の和:22255702

約数の個数: 16

約数和(自身を含む): 2003012280

約数和(自身を除く): 1112784640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 22255691, 44511382, 89022764, 111278455, 178045528, 222556910, 445113820, 890227640]

約数ペア:

[(1, 890227640), (2, 445113820), (4, 222556910), (5, 178045528), (8, 111278455), (10, 89022764), (20, 44511382), (40, 22255691)]