21190053339

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1990237}}^1$

素因数の和:1990276

約数の個数: 36

約数和(自身を含む): 37878209616

約数和(自身を除く): 16688156277

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 169, 273, 507, 819, 1183, 1521, 3549, 10647, 1990237, 5970711, 13931659, 17912133, 25873081, 41794977, 77619243, 125384931, 181111567, 232857729, 336350053, 543334701, 1009050159, 1630004103, 2354450371, 3027150477, 7063351113, 21190053339]

約数ペア:

[(1, 21190053339), (3, 7063351113), (7, 3027150477), (9, 2354450371), (13, 1630004103), (21, 1009050159), (39, 543334701), (63, 336350053), (91, 232857729), (117, 181111567), (169, 125384931), (273, 77619243), (507, 41794977), (819, 25873081), (1183, 17912133), (1521, 13931659), (3549, 5970711), (10647, 1990237)]