81716445

素因数分解:

$3^4\times 5^1\times {\mathrm{201769}}^1$

素因数の和:201786

約数の個数: 20

約数和(自身を含む): 146485020

約数和(自身を除く): 64768575

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 201769, 605307, 1008845, 1815921, 3026535, 5447763, 9079605, 16343289, 27238815, 81716445]

約数ペア:

[(1, 81716445), (3, 27238815), (5, 16343289), (9, 9079605), (15, 5447763), (27, 3026535), (45, 1815921), (81, 1008845), (135, 605307), (405, 201769)]