21031210

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{641}}^1$

素因数の和:858

約数の個数: 32

約数和(自身を含む): 40353552

約数和(自身を除く): 19322342

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 193, 386, 641, 965, 1282, 1930, 3205, 3281, 6410, 6562, 10897, 16405, 21794, 32810, 54485, 108970, 123713, 247426, 618565, 1237130, 2103121, 4206242, 10515605, 21031210]

約数ペア:

[(1, 21031210), (2, 10515605), (5, 4206242), (10, 2103121), (17, 1237130), (34, 618565), (85, 247426), (170, 123713), (193, 108970), (386, 54485), (641, 32810), (965, 21794), (1282, 16405), (1930, 10897), (3205, 6562), (3281, 6410)]