210955880

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{20521}}^1$

素因数の和:20789

約数の個数: 32

約数和(自身を含む): 476520840

約数和(自身を除く): 265564960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 20521, 41042, 82084, 102605, 164168, 205210, 410420, 820840, 5273897, 10547794, 21095588, 26369485, 42191176, 52738970, 105477940, 210955880]

約数ペア:

[(1, 210955880), (2, 105477940), (4, 52738970), (5, 42191176), (8, 26369485), (10, 21095588), (20, 10547794), (40, 5273897), (257, 820840), (514, 410420), (1028, 205210), (1285, 164168), (2056, 102605), (2570, 82084), (5140, 41042), (10280, 20521)]