257002431

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{1871}}^1$

素因数の和:2123

約数の個数: 32

約数和(自身を含む): 406388736

約数和(自身を除く): 149386305

約数列:

[1, 3, 7, 21, 31, 93, 211, 217, 633, 651, 1477, 1871, 4431, 5613, 6541, 13097, 19623, 39291, 45787, 58001, 137361, 174003, 394781, 406007, 1184343, 1218021, 2763467, 8290401, 12238211, 36714633, 85667477, 257002431]

約数ペア:

[(1, 257002431), (3, 85667477), (7, 36714633), (21, 12238211), (31, 8290401), (93, 2763467), (211, 1218021), (217, 1184343), (633, 406007), (651, 394781), (1477, 174003), (1871, 137361), (4431, 58001), (5613, 45787), (6541, 39291), (13097, 19623)]