21321657

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3049}}^1$

素因数の和:3102

約数の個数: 32

約数和(自身を含む): 37088000

約数和(自身を除く): 15766343

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 3049, 6993, 9147, 21343, 27441, 64029, 82323, 112813, 192087, 338439, 576261, 789691, 1015317, 2369073, 3045951, 7107219, 21321657]

約数ペア:

[(1, 21321657), (3, 7107219), (7, 3045951), (9, 2369073), (21, 1015317), (27, 789691), (37, 576261), (63, 338439), (111, 192087), (189, 112813), (259, 82323), (333, 64029), (777, 27441), (999, 21343), (2331, 9147), (3049, 6993)]