20503072

素因数分解:

$2^5\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 41846112

約数和(自身を除く): 21343040

約数列:

[1, 2, 4, 8, 16, 32, 67, 73, 131, 134, 146, 262, 268, 292, 524, 536, 584, 1048, 1072, 1168, 2096, 2144, 2336, 4192, 4891, 8777, 9563, 9782, 17554, 19126, 19564, 35108, 38252, 39128, 70216, 76504, 78256, 140432, 153008, 156512, 280864, 306016, 640721, 1281442, 2562884, 5125768, 10251536, 20503072]

約数ペア:

[(1, 20503072), (2, 10251536), (4, 5125768), (8, 2562884), (16, 1281442), (32, 640721), (67, 306016), (73, 280864), (131, 156512), (134, 153008), (146, 140432), (262, 78256), (268, 76504), (292, 70216), (524, 39128), (536, 38252), (584, 35108), (1048, 19564), (1072, 19126), (1168, 17554), (2096, 9782), (2144, 9563), (2336, 8777), (4192, 4891)]