20908840

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{22727}}^1$

素因数の和:22761

約数の個数: 32

約数和(自身を含む): 49092480

約数和(自身を除く): 28183640

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 22727, 45454, 90908, 113635, 181816, 227270, 454540, 522721, 909080, 1045442, 2090884, 2613605, 4181768, 5227210, 10454420, 20908840]

約数ペア:

[(1, 20908840), (2, 10454420), (4, 5227210), (5, 4181768), (8, 2613605), (10, 2090884), (20, 1045442), (23, 909080), (40, 522721), (46, 454540), (92, 227270), (115, 181816), (184, 113635), (230, 90908), (460, 45454), (920, 22727)]