21031755368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{786881}}^1$

素因数の和:787157

約数の個数: 32

約数和(自身を含む): 42633266760

約数和(自身を除く): 21601511392

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 257, 514, 1028, 2056, 3341, 6682, 13364, 26728, 786881, 1573762, 3147524, 6295048, 10229453, 20458906, 40917812, 81835624, 202228417, 404456834, 808913668, 1617827336, 2628969421, 5257938842, 10515877684, 21031755368]

約数ペア:

[(1, 21031755368), (2, 10515877684), (4, 5257938842), (8, 2628969421), (13, 1617827336), (26, 808913668), (52, 404456834), (104, 202228417), (257, 81835624), (514, 40917812), (1028, 20458906), (2056, 10229453), (3341, 6295048), (6682, 3147524), (13364, 1573762), (26728, 786881)]