20391448

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4729}}^1$

素因数の和:4760

約数の個数: 48

約数和(自身を含む): 48529800

約数和(自身を除く): 28138352

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 154, 196, 308, 392, 539, 616, 1078, 2156, 4312, 4729, 9458, 18916, 33103, 37832, 52019, 66206, 104038, 132412, 208076, 231721, 264824, 364133, 416152, 463442, 728266, 926884, 1456532, 1853768, 2548931, 2913064, 5097862, 10195724, 20391448]

約数ペア:

[(1, 20391448), (2, 10195724), (4, 5097862), (7, 2913064), (8, 2548931), (11, 1853768), (14, 1456532), (22, 926884), (28, 728266), (44, 463442), (49, 416152), (56, 364133), (77, 264824), (88, 231721), (98, 208076), (154, 132412), (196, 104038), (308, 66206), (392, 52019), (539, 37832), (616, 33103), (1078, 18916), (2156, 9458), (4312, 4729)]