20205405

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{40819}}^1$

素因数の和:40841

約数の個数: 24

約数和(自身を含む): 38207520

約数和(自身を除く): 18002115

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 40819, 122457, 204095, 367371, 449009, 612285, 1347027, 1836855, 2245045, 4041081, 6735135, 20205405]

約数ペア:

[(1, 20205405), (3, 6735135), (5, 4041081), (9, 2245045), (11, 1836855), (15, 1347027), (33, 612285), (45, 449009), (55, 367371), (99, 204095), (165, 122457), (495, 40819)]