21540915

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43517}}^1$

素因数の和:43539

約数の個数: 24

約数和(自身を含む): 40732848

約数和(自身を除く): 19191933

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 43517, 130551, 217585, 391653, 478687, 652755, 1436061, 1958265, 2393435, 4308183, 7180305, 21540915]

約数ペア:

[(1, 21540915), (3, 7180305), (5, 4308183), (9, 2393435), (11, 1958265), (15, 1436061), (33, 652755), (45, 478687), (55, 391653), (99, 217585), (165, 130551), (495, 43517)]