20518879

素因数分解:

${\mathrm{19}}^2\times {\mathrm{113}}^1\times {\mathrm{503}}^1$

素因数の和:654

約数の個数: 12

約数和(自身を含む): 21890736

約数和(自身を除く): 1371857

約数列:

[1, 19, 113, 361, 503, 2147, 9557, 40793, 56839, 181583, 1079941, 20518879]

約数ペア:

[(1, 20518879), (19, 1079941), (113, 181583), (361, 56839), (503, 40793), (2147, 9557)]