21122255

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:767

約数の個数: 32

約数和(自身を含む): 32030208

約数和(自身を除く): 10907953

約数列:

[1, 5, 7, 11, 35, 55, 77, 83, 385, 415, 581, 661, 913, 2905, 3305, 4565, 4627, 6391, 7271, 23135, 31955, 36355, 50897, 54863, 254485, 274315, 384041, 603493, 1920205, 3017465, 4224451, 21122255]

約数ペア:

[(1, 21122255), (5, 4224451), (7, 3017465), (11, 1920205), (35, 603493), (55, 384041), (77, 274315), (83, 254485), (385, 54863), (415, 50897), (581, 36355), (661, 31955), (913, 23135), (2905, 7271), (3305, 6391), (4565, 4627)]