21771519

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{307}}^2$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 36309888

約数和(自身を除く): 14538369

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 307, 921, 2149, 3377, 6447, 10131, 23639, 70917, 94249, 282747, 659743, 1036739, 1979229, 3110217, 7257173, 21771519]

約数ペア:

[(1, 21771519), (3, 7257173), (7, 3110217), (11, 1979229), (21, 1036739), (33, 659743), (77, 282747), (231, 94249), (307, 70917), (921, 23639), (2149, 10131), (3377, 6447)]