20921296319

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{367}}^1\times {\mathrm{521}}^1$

素因数の和:949

約数の個数: 64

約数和(自身を含む): 27661824000

約数和(自身を除く): 6740527681

約数列:

[1, 7, 11, 29, 49, 77, 203, 319, 343, 367, 521, 539, 1421, 2233, 2569, 3647, 3773, 4037, 5731, 9947, 10643, 15109, 15631, 17983, 25529, 28259, 40117, 74501, 105763, 109417, 117073, 125881, 166199, 178703, 191207, 197813, 280819, 521507, 740341, 819511, 1163393, 1338449, 1384691, 1965733, 2103277, 3650549, 5182387, 5545003, 5736577, 8143751, 9369143, 14722939, 38815021, 40156039, 57006257, 60995033, 65584001, 103060573, 271705147, 426965231, 721424011, 1901936029, 2988756617, 20921296319]

約数ペア:

[(1, 20921296319), (7, 2988756617), (11, 1901936029), (29, 721424011), (49, 426965231), (77, 271705147), (203, 103060573), (319, 65584001), (343, 60995033), (367, 57006257), (521, 40156039), (539, 38815021), (1421, 14722939), (2233, 9369143), (2569, 8143751), (3647, 5736577), (3773, 5545003), (4037, 5182387), (5731, 3650549), (9947, 2103277), (10643, 1965733), (15109, 1384691), (15631, 1338449), (17983, 1163393), (25529, 819511), (28259, 740341), (40117, 521507), (74501, 280819), (105763, 197813), (109417, 191207), (117073, 178703), (125881, 166199)]