21982168

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 45457200

約数和(自身を除く): 23475032

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 169, 229, 284, 338, 458, 568, 676, 916, 923, 1352, 1832, 1846, 2977, 3692, 5954, 7384, 11908, 11999, 16259, 23816, 23998, 32518, 38701, 47996, 65036, 77402, 95992, 130072, 154804, 211367, 309608, 422734, 845468, 1690936, 2747771, 5495542, 10991084, 21982168]

約数ペア:

[(1, 21982168), (2, 10991084), (4, 5495542), (8, 2747771), (13, 1690936), (26, 845468), (52, 422734), (71, 309608), (104, 211367), (142, 154804), (169, 130072), (229, 95992), (284, 77402), (338, 65036), (458, 47996), (568, 38701), (676, 32518), (916, 23998), (923, 23816), (1352, 16259), (1832, 11999), (1846, 11908), (2977, 7384), (3692, 5954)]