18937269

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9521}}^1$

素因数の和:9557

約数の個数: 24

約数和(自身を含む): 31194072

約数和(自身を除く): 12256803

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 9521, 28563, 85689, 123773, 161857, 371319, 485571, 1113957, 1456713, 2104141, 6312423, 18937269]

約数ペア:

[(1, 18937269), (3, 6312423), (9, 2104141), (13, 1456713), (17, 1113957), (39, 485571), (51, 371319), (117, 161857), (153, 123773), (221, 85689), (663, 28563), (1989, 9521)]