20746768

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2609}}^1$

素因数の和:2695

約数の個数: 40

約数和(自身を含む): 46604160

約数和(自身を除く): 25857392

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2609, 3976, 5218, 7952, 10436, 18263, 20872, 36526, 41744, 73052, 146104, 185239, 292208, 370478, 740956, 1296673, 1481912, 2593346, 2963824, 5186692, 10373384, 20746768]

約数ペア:

[(1, 20746768), (2, 10373384), (4, 5186692), (7, 2963824), (8, 2593346), (14, 1481912), (16, 1296673), (28, 740956), (56, 370478), (71, 292208), (112, 185239), (142, 146104), (284, 73052), (497, 41744), (568, 36526), (994, 20872), (1136, 18263), (1988, 10436), (2609, 7952), (3976, 5218)]