20766775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{373}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 27547344

約数和(自身を除く): 6780569

約数列:

[1, 5, 17, 25, 85, 131, 373, 425, 655, 1865, 2227, 3275, 6341, 9325, 11135, 31705, 48863, 55675, 158525, 244315, 830671, 1221575, 4153355, 20766775]

約数ペア:

[(1, 20766775), (5, 4153355), (17, 1221575), (25, 830671), (85, 244315), (131, 158525), (373, 55675), (425, 48863), (655, 31705), (1865, 11135), (2227, 9325), (3275, 6341)]