20540212

素因数分解:

$2^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1361}}^1$

素因数の和:1397

約数の個数: 48

約数和(自身を含む): 45763200

約数和(自身を除く): 25222988

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 343, 539, 686, 1078, 1361, 1372, 2156, 2722, 3773, 5444, 7546, 9527, 14971, 15092, 19054, 29942, 38108, 59884, 66689, 104797, 133378, 209594, 266756, 419188, 466823, 733579, 933646, 1467158, 1867292, 2934316, 5135053, 10270106, 20540212]

約数ペア:

[(1, 20540212), (2, 10270106), (4, 5135053), (7, 2934316), (11, 1867292), (14, 1467158), (22, 933646), (28, 733579), (44, 466823), (49, 419188), (77, 266756), (98, 209594), (154, 133378), (196, 104797), (308, 66689), (343, 59884), (539, 38108), (686, 29942), (1078, 19054), (1361, 15092), (1372, 14971), (2156, 9527), (2722, 7546), (3773, 5444)]