21095535517

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{443}}^1\times {\mathrm{7307}}^1$

素因数の和:7790

約数の個数: 32

約数和(自身を含む): 25958016000

約数和(自身を除く): 4862480483

約数列:

[1, 7, 19, 49, 133, 343, 443, 931, 3101, 6517, 7307, 8417, 21707, 51149, 58919, 138833, 151949, 358043, 412433, 971831, 2506301, 2887031, 3237001, 6802817, 22659007, 47619719, 61503019, 158613049, 430521133, 1110291343, 3013647931, 21095535517]

約数ペア:

[(1, 21095535517), (7, 3013647931), (19, 1110291343), (49, 430521133), (133, 158613049), (343, 61503019), (443, 47619719), (931, 22659007), (3101, 6802817), (6517, 3237001), (7307, 2887031), (8417, 2506301), (21707, 971831), (51149, 412433), (58919, 358043), (138833, 151949)]