420178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:353

約数の個数: 16

約数和(自身を含む): 699840

約数和(自身を除く): 279662

約数列:

[1, 2, 11, 22, 71, 142, 269, 538, 781, 1562, 2959, 5918, 19099, 38198, 210089, 420178]

約数ペア:

[(1, 420178), (2, 210089), (11, 38198), (22, 19099), (71, 5918), (142, 2959), (269, 1562), (538, 781)]