2213780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1559}}^1$

素因数の和:1639

約数の個数: 24

約数和(自身を含む): 4717440

約数和(自身を除く): 2503660

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 1559, 3118, 6236, 7795, 15590, 31180, 110689, 221378, 442756, 553445, 1106890, 2213780]

約数ペア:

[(1, 2213780), (2, 1106890), (4, 553445), (5, 442756), (10, 221378), (20, 110689), (71, 31180), (142, 15590), (284, 7795), (355, 6236), (710, 3118), (1420, 1559)]