205120827

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1804

約数の個数: 48

約数和(自身を含む): 338476320

約数和(自身を除く): 133355493

約数列:

[1, 3, 9, 17, 19, 41, 51, 57, 123, 153, 171, 323, 369, 697, 779, 969, 1721, 2091, 2337, 2907, 5163, 6273, 7011, 13243, 15489, 29257, 32699, 39729, 70561, 87771, 98097, 119187, 211683, 263313, 294291, 555883, 635049, 1199537, 1340659, 1667649, 3598611, 4021977, 5002947, 10795833, 12065931, 22791203, 68373609, 205120827]

約数ペア:

[(1, 205120827), (3, 68373609), (9, 22791203), (17, 12065931), (19, 10795833), (41, 5002947), (51, 4021977), (57, 3598611), (123, 1667649), (153, 1340659), (171, 1199537), (323, 635049), (369, 555883), (697, 294291), (779, 263313), (969, 211683), (1721, 119187), (2091, 98097), (2337, 87771), (2907, 70561), (5163, 39729), (6273, 32699), (7011, 29257), (13243, 15489)]