2784275

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{659}}^1$

素因数の和:695

約数の個数: 18

約数和(自身を含む): 3744180

約数和(自身を除く): 959905

約数列:

[1, 5, 13, 25, 65, 169, 325, 659, 845, 3295, 4225, 8567, 16475, 42835, 111371, 214175, 556855, 2784275]

約数ペア:

[(1, 2784275), (5, 556855), (13, 214175), (25, 111371), (65, 42835), (169, 16475), (325, 8567), (659, 4225), (845, 3295)]