18108279

素因数分解:

$3^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:421

約数の個数: 40

約数和(自身を含む): 31305120

約数和(自身を除く): 13196841

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 109, 189, 293, 327, 567, 763, 879, 981, 2051, 2289, 2637, 2943, 6153, 6867, 7911, 8829, 18459, 20601, 23733, 31937, 55377, 61803, 95811, 166131, 223559, 287433, 670677, 862299, 2012031, 2586897, 6036093, 18108279]

約数ペア:

[(1, 18108279), (3, 6036093), (7, 2586897), (9, 2012031), (21, 862299), (27, 670677), (63, 287433), (81, 223559), (109, 166131), (189, 95811), (293, 61803), (327, 55377), (567, 31937), (763, 23733), (879, 20601), (981, 18459), (2051, 8829), (2289, 7911), (2637, 6867), (2943, 6153)]