21780176290

素因数分解:

$2^1\times 5^1\times {\mathrm{2729}}^1\times {\mathrm{798101}}^1$

素因数の和:800837

約数の個数: 16

約数和(自身を含む): 39218732280

約数和(自身を除く): 17438555990

約数列:

[1, 2, 5, 10, 2729, 5458, 13645, 27290, 798101, 1596202, 3990505, 7981010, 2178017629, 4356035258, 10890088145, 21780176290]

約数ペア:

[(1, 21780176290), (2, 10890088145), (5, 4356035258), (10, 2178017629), (2729, 7981010), (5458, 3990505), (13645, 1596202), (27290, 798101)]