20237320

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1237}}^1$

素因数の和:1657

約数の個数: 32

約数和(自身を含む): 45682200

約数和(自身を除く): 25444880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1237, 1636, 2045, 2474, 3272, 4090, 4948, 6185, 8180, 9896, 12370, 16360, 24740, 49480, 505933, 1011866, 2023732, 2529665, 4047464, 5059330, 10118660, 20237320]

約数ペア:

[(1, 20237320), (2, 10118660), (4, 5059330), (5, 4047464), (8, 2529665), (10, 2023732), (20, 1011866), (40, 505933), (409, 49480), (818, 24740), (1237, 16360), (1636, 12370), (2045, 9896), (2474, 8180), (3272, 6185), (4090, 4948)]