213219721

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{887}}^1$

素因数の和:993

約数の個数: 24

約数和(自身を含む): 257044032

約数和(自身を除く): 43824311

約数列:

[1, 11, 13, 41, 143, 451, 533, 887, 1681, 5863, 9757, 11531, 18491, 21853, 36367, 126841, 240383, 400037, 472771, 1491047, 5200481, 16401517, 19383611, 213219721]

約数ペア:

[(1, 213219721), (11, 19383611), (13, 16401517), (41, 5200481), (143, 1491047), (451, 472771), (533, 400037), (887, 240383), (1681, 126841), (5863, 36367), (9757, 21853), (11531, 18491)]