20199905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{4649}}^1$

素因数の和:4744

約数の個数: 16

約数和(自身を含む): 26784000

約数和(自身を除く): 6584095

約数列:

[1, 5, 11, 55, 79, 395, 869, 4345, 4649, 23245, 51139, 255695, 367271, 1836355, 4039981, 20199905]

約数ペア:

[(1, 20199905), (5, 4039981), (11, 1836355), (55, 367271), (79, 255695), (395, 51139), (869, 23245), (4345, 4649)]