209651764

素因数分解:

$2^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{18307}}^1$

素因数の和:18727

約数の個数: 24

約数和(自身を含む): 420351680

約数和(自身を除く): 210699916

約数列:

[1, 2, 4, 7, 14, 28, 409, 818, 1636, 2863, 5726, 11452, 18307, 36614, 73228, 128149, 256298, 512596, 7487563, 14975126, 29950252, 52412941, 104825882, 209651764]

約数ペア:

[(1, 209651764), (2, 104825882), (4, 52412941), (7, 29950252), (14, 14975126), (28, 7487563), (409, 512596), (818, 256298), (1636, 128149), (2863, 73228), (5726, 36614), (11452, 18307)]