21641331

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{1039}}^1$

素因数の和:1226

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 8011149

約数列:

[1, 3, 53, 131, 159, 393, 1039, 3117, 6943, 20829, 55067, 136109, 165201, 408327, 7213777, 21641331]

約数ペア:

[(1, 21641331), (3, 7213777), (53, 408327), (131, 165201), (159, 136109), (393, 55067), (1039, 20829), (3117, 6943)]