20954556

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{1697}}^1$

素因数の和:1728

約数の個数: 72

約数和(自身を含む): 61807200

約数和(自身を除く): 40852644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 343, 441, 588, 686, 882, 1029, 1372, 1697, 1764, 2058, 3087, 3394, 4116, 5091, 6174, 6788, 10182, 11879, 12348, 15273, 20364, 23758, 30546, 35637, 47516, 61092, 71274, 83153, 106911, 142548, 166306, 213822, 249459, 332612, 427644, 498918, 582071, 748377, 997836, 1164142, 1496754, 1746213, 2328284, 2993508, 3492426, 5238639, 6984852, 10477278, 20954556]

約数ペア:

[(1, 20954556), (2, 10477278), (3, 6984852), (4, 5238639), (6, 3492426), (7, 2993508), (9, 2328284), (12, 1746213), (14, 1496754), (18, 1164142), (21, 997836), (28, 748377), (36, 582071), (42, 498918), (49, 427644), (63, 332612), (84, 249459), (98, 213822), (126, 166306), (147, 142548), (196, 106911), (252, 83153), (294, 71274), (343, 61092), (441, 47516), (588, 35637), (686, 30546), (882, 23758), (1029, 20364), (1372, 15273), (1697, 12348), (1764, 11879), (2058, 10182), (3087, 6788), (3394, 6174), (4116, 5091)]