20445691

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{21961}}^1$

素因数の和:21994

約数の個数: 12

約数和(自身を含む): 25036680

約数和(自身を除く): 4590989

約数列:

[1, 7, 19, 49, 133, 931, 21961, 153727, 417259, 1076089, 2920813, 20445691]

約数ペア:

[(1, 20445691), (7, 2920813), (19, 1076089), (49, 417259), (133, 153727), (931, 21961)]