21083764

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31189}}^1$

素因数の和:31219

約数の個数: 18

約数和(自身を含む): 39954390

約数和(自身を除く): 18870626

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31189, 62378, 124756, 405457, 810914, 1621828, 5270941, 10541882, 21083764]

約数ペア:

[(1, 21083764), (2, 10541882), (4, 5270941), (13, 1621828), (26, 810914), (52, 405457), (169, 124756), (338, 62378), (676, 31189)]