21131256

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{313}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 55389600

約数和(自身を除く): 34258344

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 87, 97, 116, 174, 194, 232, 291, 313, 348, 388, 582, 626, 696, 776, 939, 1164, 1252, 1878, 2328, 2504, 2813, 3756, 5626, 7512, 8439, 9077, 11252, 16878, 18154, 22504, 27231, 30361, 33756, 36308, 54462, 60722, 67512, 72616, 91083, 108924, 121444, 182166, 217848, 242888, 364332, 728664, 880469, 1760938, 2641407, 3521876, 5282814, 7043752, 10565628, 21131256]

約数ペア:

[(1, 21131256), (2, 10565628), (3, 7043752), (4, 5282814), (6, 3521876), (8, 2641407), (12, 1760938), (24, 880469), (29, 728664), (58, 364332), (87, 242888), (97, 217848), (116, 182166), (174, 121444), (194, 108924), (232, 91083), (291, 72616), (313, 67512), (348, 60722), (388, 54462), (582, 36308), (626, 33756), (696, 30361), (776, 27231), (939, 22504), (1164, 18154), (1252, 16878), (1878, 11252), (2328, 9077), (2504, 8439), (2813, 7512), (3756, 5626)]