891729

素因数分解:

$3^4\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 20

約数和(自身を含む): 1357620

約数和(自身を除く): 465891

約数列:

[1, 3, 9, 27, 81, 101, 109, 303, 327, 909, 981, 2727, 2943, 8181, 8829, 11009, 33027, 99081, 297243, 891729]

約数ペア:

[(1, 891729), (3, 297243), (9, 99081), (27, 33027), (81, 11009), (101, 8829), (109, 8181), (303, 2943), (327, 2727), (909, 981)]