21555955

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1481}}^1$

素因数の和:1598

約数の個数: 16

約数和(自身を含む): 26889408

約数和(自身を除く): 5333453

約数列:

[1, 5, 41, 71, 205, 355, 1481, 2911, 7405, 14555, 60721, 105151, 303605, 525755, 4311191, 21555955]

約数ペア:

[(1, 21555955), (5, 4311191), (41, 525755), (71, 303605), (205, 105151), (355, 60721), (1481, 14555), (2911, 7405)]