21453009

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1\times {\mathrm{653}}^1$

素因数の和:936

約数の個数: 16

約数和(自身を含む): 29382912

約数和(自身を除く): 7929903

約数列:

[1, 3, 47, 141, 233, 653, 699, 1959, 10951, 30691, 32853, 92073, 152149, 456447, 7151003, 21453009]

約数ペア:

[(1, 21453009), (3, 7151003), (47, 456447), (141, 152149), (233, 92073), (653, 32853), (699, 30691), (1959, 10951)]