20809929416

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{10121561}}^1$

素因数の和:10121824

約数の個数: 16

約数和(自身を含む): 39170444940

約数和(自身を除く): 18360515524

約数列:

[1, 2, 4, 8, 257, 514, 1028, 2056, 10121561, 20243122, 40486244, 80972488, 2601241177, 5202482354, 10404964708, 20809929416]

約数ペア:

[(1, 20809929416), (2, 10404964708), (4, 5202482354), (8, 2601241177), (257, 80972488), (514, 40486244), (1028, 20243122), (2056, 10121561)]