20284768

素因数分解:

$2^5\times 7^1\times {\mathrm{137}}^1\times {\mathrm{661}}^1$

素因数の和:815

約数の個数: 48

約数和(自身を含む): 46043424

約数和(自身を除く): 25758656

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 137, 224, 274, 548, 661, 959, 1096, 1322, 1918, 2192, 2644, 3836, 4384, 4627, 5288, 7672, 9254, 10576, 15344, 18508, 21152, 30688, 37016, 74032, 90557, 148064, 181114, 362228, 633899, 724456, 1267798, 1448912, 2535596, 2897824, 5071192, 10142384, 20284768]

約数ペア:

[(1, 20284768), (2, 10142384), (4, 5071192), (7, 2897824), (8, 2535596), (14, 1448912), (16, 1267798), (28, 724456), (32, 633899), (56, 362228), (112, 181114), (137, 148064), (224, 90557), (274, 74032), (548, 37016), (661, 30688), (959, 21152), (1096, 18508), (1322, 15344), (1918, 10576), (2192, 9254), (2644, 7672), (3836, 5288), (4384, 4627)]