28782351

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1907}}^1$

素因数の和:1972

約数の個数: 32

約数和(自身を含む): 47013120

約数和(自身を除く): 18230769

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 1161, 1677, 1907, 5031, 5721, 15093, 17163, 24791, 51489, 74373, 82001, 223119, 246003, 669357, 738009, 1066013, 2214027, 3198039, 9594117, 28782351]

約数ペア:

[(1, 28782351), (3, 9594117), (9, 3198039), (13, 2214027), (27, 1066013), (39, 738009), (43, 669357), (117, 246003), (129, 223119), (351, 82001), (387, 74373), (559, 51489), (1161, 24791), (1677, 17163), (1907, 15093), (5031, 5721)]