20478465

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65011}}^1$

素因数の和:65029

約数の個数: 24

約数和(自身を含む): 40567488

約数和(自身を除く): 20089023

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65011, 195033, 325055, 455077, 585099, 975165, 1365231, 2275385, 2925495, 4095693, 6826155, 20478465]

約数ペア:

[(1, 20478465), (3, 6826155), (5, 4095693), (7, 2925495), (9, 2275385), (15, 1365231), (21, 975165), (35, 585099), (45, 455077), (63, 325055), (105, 195033), (315, 65011)]