18920456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{139121}}^1$

素因数の和:139144

約数の個数: 16

約数和(自身を含む): 37562940

約数和(自身を除く): 18642484

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 139121, 278242, 556484, 1112968, 2365057, 4730114, 9460228, 18920456]

約数ペア:

[(1, 18920456), (2, 9460228), (4, 4730114), (8, 2365057), (17, 1112968), (34, 556484), (68, 278242), (136, 139121)]