215621620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{98909}}^1$

素因数の和:99027

約数の個数: 24

約数和(自身を含む): 456964200

約数和(自身を除く): 241342580

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 98909, 197818, 395636, 494545, 989090, 1978180, 10781081, 21562162, 43124324, 53905405, 107810810, 215621620]

約数ペア:

[(1, 215621620), (2, 107810810), (4, 53905405), (5, 43124324), (10, 21562162), (20, 10781081), (109, 1978180), (218, 989090), (436, 494545), (545, 395636), (1090, 197818), (2180, 98909)]