204920

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:167

約数の個数: 32

約数和(自身を含む): 475200

約数和(自身を除く): 270280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 109, 188, 218, 235, 376, 436, 470, 545, 872, 940, 1090, 1880, 2180, 4360, 5123, 10246, 20492, 25615, 40984, 51230, 102460, 204920]

約数ペア:

[(1, 204920), (2, 102460), (4, 51230), (5, 40984), (8, 25615), (10, 20492), (20, 10246), (40, 5123), (47, 4360), (94, 2180), (109, 1880), (188, 1090), (218, 940), (235, 872), (376, 545), (436, 470)]