81211815

素因数分解:

$3^5\times 5^1\times {\mathrm{66841}}^1$

素因数の和:66861

約数の個数: 24

約数和(自身を含む): 145982928

約数和(自身を除く): 64771113

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 66841, 200523, 334205, 601569, 1002615, 1804707, 3007845, 5414121, 9023535, 16242363, 27070605, 81211815]

約数ペア:

[(1, 81211815), (3, 27070605), (5, 16242363), (9, 9023535), (15, 5414121), (27, 3007845), (45, 1804707), (81, 1002615), (135, 601569), (243, 334205), (405, 200523), (1215, 66841)]