19713519

素因数分解:

$3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1483}}^1$

素因数の和:1707

約数の個数: 24

約数和(自身を含む): 32719232

約数和(自身を除く): 13005713

約数列:

[1, 3, 7, 9, 21, 63, 211, 633, 1477, 1483, 1899, 4431, 4449, 10381, 13293, 13347, 31143, 93429, 312913, 938739, 2190391, 2816217, 6571173, 19713519]

約数ペア:

[(1, 19713519), (3, 6571173), (7, 2816217), (9, 2190391), (21, 938739), (63, 312913), (211, 93429), (633, 31143), (1477, 13347), (1483, 13293), (1899, 10381), (4431, 4449)]