20683840

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{593}}^1$

素因数の和:719

約数の個数: 56

約数和(自身を含む): 49789080

約数和(自身を除く): 29105240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 545, 593, 872, 1090, 1186, 1744, 2180, 2372, 2965, 3488, 4360, 4744, 5930, 6976, 8720, 9488, 11860, 17440, 18976, 23720, 34880, 37952, 47440, 64637, 94880, 129274, 189760, 258548, 323185, 517096, 646370, 1034192, 1292740, 2068384, 2585480, 4136768, 5170960, 10341920, 20683840]

約数ペア:

[(1, 20683840), (2, 10341920), (4, 5170960), (5, 4136768), (8, 2585480), (10, 2068384), (16, 1292740), (20, 1034192), (32, 646370), (40, 517096), (64, 323185), (80, 258548), (109, 189760), (160, 129274), (218, 94880), (320, 64637), (436, 47440), (545, 37952), (593, 34880), (872, 23720), (1090, 18976), (1186, 17440), (1744, 11860), (2180, 9488), (2372, 8720), (2965, 6976), (3488, 5930), (4360, 4744)]