20816235

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3823}}^1$

素因数の和:3856

約数の個数: 36

約数和(自身を含む): 39670176

約数和(自身を除く): 18853941

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 3823, 5445, 11469, 19115, 34407, 42053, 57345, 126159, 172035, 210265, 378477, 462583, 630795, 1387749, 1892385, 2312915, 4163247, 6938745, 20816235]

約数ペア:

[(1, 20816235), (3, 6938745), (5, 4163247), (9, 2312915), (11, 1892385), (15, 1387749), (33, 630795), (45, 462583), (55, 378477), (99, 210265), (121, 172035), (165, 126159), (363, 57345), (495, 42053), (605, 34407), (1089, 19115), (1815, 11469), (3823, 5445)]