25447820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{17921}}^1$

素因数の和:18001

約数の個数: 24

約数和(自身を含む): 54196128

約数和(自身を除く): 28748308

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 17921, 35842, 71684, 89605, 179210, 358420, 1272391, 2544782, 5089564, 6361955, 12723910, 25447820]

約数ペア:

[(1, 25447820), (2, 12723910), (4, 6361955), (5, 5089564), (10, 2544782), (20, 1272391), (71, 358420), (142, 179210), (284, 89605), (355, 71684), (710, 35842), (1420, 17921)]