20577795

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27997}}^1$

素因数の和:28019

約数の個数: 24

約数和(自身を含む): 38301264

約数和(自身を除く): 17723469

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27997, 83991, 139985, 195979, 419955, 587937, 979895, 1371853, 2939685, 4115559, 6859265, 20577795]

約数ペア:

[(1, 20577795), (3, 6859265), (5, 4115559), (7, 2939685), (15, 1371853), (21, 979895), (35, 587937), (49, 419955), (105, 195979), (147, 139985), (245, 83991), (735, 27997)]