19990323

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{347}}^1$

素因数の和:563

約数の個数: 24

約数和(自身を含む): 29912688

約数和(自身を除く): 9922365

約数列:

[1, 3, 9, 37, 111, 173, 333, 347, 519, 1041, 1557, 3123, 6401, 12839, 19203, 38517, 57609, 60031, 115551, 180093, 540279, 2221147, 6663441, 19990323]

約数ペア:

[(1, 19990323), (3, 6663441), (9, 2221147), (37, 540279), (111, 180093), (173, 115551), (333, 60031), (347, 57609), (519, 38517), (1041, 19203), (1557, 12839), (3123, 6401)]