205439164

素因数分解:

$2^2\times 7^4\times {\mathrm{21391}}^1$

素因数の和:21423

約数の個数: 30

約数和(自身を含む): 419432944

約数和(自身を除く): 213993780

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 2401, 4802, 9604, 21391, 42782, 85564, 149737, 299474, 598948, 1048159, 2096318, 4192636, 7337113, 14674226, 29348452, 51359791, 102719582, 205439164]

約数ペア:

[(1, 205439164), (2, 102719582), (4, 51359791), (7, 29348452), (14, 14674226), (28, 7337113), (49, 4192636), (98, 2096318), (196, 1048159), (343, 598948), (686, 299474), (1372, 149737), (2401, 85564), (4802, 42782), (9604, 21391)]