18898718

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1\times {\mathrm{433}}^1$

素因数の和:731

約数の個数: 16

約数和(自身を含む): 28800240

約数和(自身を除く): 9901522

約数列:

[1, 2, 139, 157, 278, 314, 433, 866, 21823, 43646, 60187, 67981, 120374, 135962, 9449359, 18898718]

約数ペア:

[(1, 18898718), (2, 9449359), (139, 135962), (157, 120374), (278, 67981), (314, 60187), (433, 43646), (866, 21823)]