81734140

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{42131}}^1$

素因数の和:42237

約数の個数: 24

約数和(自身を含む): 173415312

約数和(自身を除く): 91681172

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 42131, 84262, 168524, 210655, 421310, 842620, 4086707, 8173414, 16346828, 20433535, 40867070, 81734140]

約数ペア:

[(1, 81734140), (2, 40867070), (4, 20433535), (5, 16346828), (10, 8173414), (20, 4086707), (97, 842620), (194, 421310), (388, 210655), (485, 168524), (970, 84262), (1940, 42131)]