201621555

素因数分解:

$3^4\times 5^1\times {\mathrm{497831}}^1$

素因数の和:497848

約数の個数: 20

約数和(自身を含む): 361426032

約数和(自身を除く): 159804477

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 497831, 1493493, 2489155, 4480479, 7467465, 13441437, 22402395, 40324311, 67207185, 201621555]

約数ペア:

[(1, 201621555), (3, 67207185), (5, 40324311), (9, 22402395), (15, 13441437), (27, 7467465), (45, 4480479), (81, 2489155), (135, 1493493), (405, 497831)]