20927984

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{16987}}^1$

素因数の和:17013

約数の個数: 40

約数和(自身を含む): 50556288

約数和(自身を除く): 29628304

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 308, 616, 1232, 16987, 33974, 67948, 118909, 135896, 186857, 237818, 271792, 373714, 475636, 747428, 951272, 1307999, 1494856, 1902544, 2615998, 2989712, 5231996, 10463992, 20927984]

約数ペア:

[(1, 20927984), (2, 10463992), (4, 5231996), (7, 2989712), (8, 2615998), (11, 1902544), (14, 1494856), (16, 1307999), (22, 951272), (28, 747428), (44, 475636), (56, 373714), (77, 271792), (88, 237818), (112, 186857), (154, 135896), (176, 118909), (308, 67948), (616, 33974), (1232, 16987)]