123398

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:163

約数の個数: 16

約数和(自身を含む): 207360

約数和(自身を除く): 83962

約数列:

[1, 2, 11, 22, 71, 79, 142, 158, 781, 869, 1562, 1738, 5609, 11218, 61699, 123398]

約数ペア:

[(1, 123398), (2, 61699), (11, 11218), (22, 5609), (71, 1738), (79, 1562), (142, 869), (158, 781)]