20945155

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{54403}}^1$

素因数の和:54426

約数の個数: 16

約数和(自身を含む): 31336704

約数和(自身を除く): 10391549

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 54403, 272015, 380821, 598433, 1904105, 2992165, 4189031, 20945155]

約数ペア:

[(1, 20945155), (5, 4189031), (7, 2992165), (11, 1904105), (35, 598433), (55, 380821), (77, 272015), (385, 54403)]