217367145

素因数分解:

$3^5\times 5^1\times {\mathrm{178903}}^1$

素因数の和:178923

約数の個数: 24

約数和(自身を含む): 390726336

約数和(自身を除く): 173359191

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 178903, 536709, 894515, 1610127, 2683545, 4830381, 8050635, 14491143, 24151905, 43473429, 72455715, 217367145]

約数ペア:

[(1, 217367145), (3, 72455715), (5, 43473429), (9, 24151905), (15, 14491143), (27, 8050635), (45, 4830381), (81, 2683545), (135, 1610127), (243, 894515), (405, 536709), (1215, 178903)]