21304965

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129121}}^1$

素因数の和:129140

約数の個数: 16

約数和(自身を含む): 37187136

約数和(自身を除く): 15882171

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129121, 387363, 645605, 1420331, 1936815, 4260993, 7101655, 21304965]

約数ペア:

[(1, 21304965), (3, 7101655), (5, 4260993), (11, 1936815), (15, 1420331), (33, 645605), (55, 387363), (165, 129121)]