20333187

素因数分解:

$3^4\times 7^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:182

約数の個数: 60

約数和(自身を含む): 36416160

約数和(自身を除く): 16082973

約数列:

[1, 3, 7, 9, 21, 27, 47, 49, 63, 81, 109, 141, 147, 189, 327, 329, 423, 441, 567, 763, 981, 987, 1269, 1323, 2289, 2303, 2943, 2961, 3807, 3969, 5123, 5341, 6867, 6909, 8829, 8883, 15369, 16023, 20601, 20727, 26649, 35861, 46107, 48069, 61803, 62181, 107583, 138321, 144207, 186543, 251027, 322749, 414963, 432621, 753081, 968247, 2259243, 2904741, 6777729, 20333187]

約数ペア:

[(1, 20333187), (3, 6777729), (7, 2904741), (9, 2259243), (21, 968247), (27, 753081), (47, 432621), (49, 414963), (63, 322749), (81, 251027), (109, 186543), (141, 144207), (147, 138321), (189, 107583), (327, 62181), (329, 61803), (423, 48069), (441, 46107), (567, 35861), (763, 26649), (981, 20727), (987, 20601), (1269, 16023), (1323, 15369), (2289, 8883), (2303, 8829), (2943, 6909), (2961, 6867), (3807, 5341), (3969, 5123)]