20491372

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 41094144

約数和(自身を除く): 20602772

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 83, 124, 166, 181, 332, 341, 362, 682, 724, 913, 1364, 1826, 1991, 2573, 3652, 3982, 5146, 5611, 7964, 10292, 11222, 15023, 22444, 28303, 30046, 56606, 60092, 61721, 113212, 123442, 165253, 246884, 330506, 465713, 661012, 931426, 1862852, 5122843, 10245686, 20491372]

約数ペア:

[(1, 20491372), (2, 10245686), (4, 5122843), (11, 1862852), (22, 931426), (31, 661012), (44, 465713), (62, 330506), (83, 246884), (124, 165253), (166, 123442), (181, 113212), (332, 61721), (341, 60092), (362, 56606), (682, 30046), (724, 28303), (913, 22444), (1364, 15023), (1826, 11222), (1991, 10292), (2573, 7964), (3652, 5611), (3982, 5146)]