20522817

素因数分解:

$3^2\times 7^2\times {\mathrm{173}}^1\times {\mathrm{269}}^1$

素因数の和:462

約数の個数: 36

約数和(自身を含む): 34812180

約数和(自身を除く): 14289363

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 173, 269, 441, 519, 807, 1211, 1557, 1883, 2421, 3633, 5649, 8477, 10899, 13181, 16947, 25431, 39543, 46537, 76293, 118629, 139611, 325759, 418833, 977277, 2280313, 2931831, 6840939, 20522817]

約数ペア:

[(1, 20522817), (3, 6840939), (7, 2931831), (9, 2280313), (21, 977277), (49, 418833), (63, 325759), (147, 139611), (173, 118629), (269, 76293), (441, 46537), (519, 39543), (807, 25431), (1211, 16947), (1557, 13181), (1883, 10899), (2421, 8477), (3633, 5649)]