21425404

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5351}}^1$

素因数の和:5386

約数の個数: 48

約数和(自身を含む): 50351616

約数和(自身を除く): 28926212

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5351, 10702, 21404, 37457, 58861, 69563, 74914, 117722, 139126, 149828, 235444, 278252, 412027, 486941, 765193, 824054, 973882, 1530386, 1648108, 1947764, 3060772, 5356351, 10712702, 21425404]

約数ペア:

[(1, 21425404), (2, 10712702), (4, 5356351), (7, 3060772), (11, 1947764), (13, 1648108), (14, 1530386), (22, 973882), (26, 824054), (28, 765193), (44, 486941), (52, 412027), (77, 278252), (91, 235444), (143, 149828), (154, 139126), (182, 117722), (286, 74914), (308, 69563), (364, 58861), (572, 37457), (1001, 21404), (2002, 10702), (4004, 5351)]