647649

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{83}}^1$

素因数の和:126

約数の個数: 24

約数和(自身を含む): 1031520

約数和(自身を除く): 383871

約数列:

[1, 3, 9, 17, 27, 51, 83, 153, 249, 289, 459, 747, 867, 1411, 2241, 2601, 4233, 7803, 12699, 23987, 38097, 71961, 215883, 647649]

約数ペア:

[(1, 647649), (3, 215883), (9, 71961), (17, 38097), (27, 23987), (51, 12699), (83, 7803), (153, 4233), (249, 2601), (289, 2241), (459, 1411), (747, 867)]