20187225

素因数分解:

$3^5\times 5^2\times {\mathrm{3323}}^1$

素因数の和:3348

約数の個数: 36

約数和(自身を含む): 37508016

約数和(自身を除く): 17320791

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 1215, 2025, 3323, 6075, 9969, 16615, 29907, 49845, 83075, 89721, 149535, 249225, 269163, 448605, 747675, 807489, 1345815, 2243025, 4037445, 6729075, 20187225]

約数ペア:

[(1, 20187225), (3, 6729075), (5, 4037445), (9, 2243025), (15, 1345815), (25, 807489), (27, 747675), (45, 448605), (75, 269163), (81, 249225), (135, 149535), (225, 89721), (243, 83075), (405, 49845), (675, 29907), (1215, 16615), (2025, 9969), (3323, 6075)]