21431553

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49957}}^1$

素因数の和:49984

約数の個数: 16

約数和(自身を含む): 33571776

約数和(自身を除く): 12140223

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49957, 149871, 549527, 649441, 1648581, 1948323, 7143851, 21431553]

約数ペア:

[(1, 21431553), (3, 7143851), (11, 1948323), (13, 1648581), (33, 649441), (39, 549527), (143, 149871), (429, 49957)]