18381978

素因数分解:

$2^1\times 3^5\times {\mathrm{109}}^1\times {\mathrm{347}}^1$

素因数の和:473

約数の個数: 48

約数和(自身を含む): 41801760

約数和(自身を除く): 23419782

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 109, 162, 218, 243, 327, 347, 486, 654, 694, 981, 1041, 1962, 2082, 2943, 3123, 5886, 6246, 8829, 9369, 17658, 18738, 26487, 28107, 37823, 52974, 56214, 75646, 84321, 113469, 168642, 226938, 340407, 680814, 1021221, 2042442, 3063663, 6127326, 9190989, 18381978]

約数ペア:

[(1, 18381978), (2, 9190989), (3, 6127326), (6, 3063663), (9, 2042442), (18, 1021221), (27, 680814), (54, 340407), (81, 226938), (109, 168642), (162, 113469), (218, 84321), (243, 75646), (327, 56214), (347, 52974), (486, 37823), (654, 28107), (694, 26487), (981, 18738), (1041, 17658), (1962, 9369), (2082, 8829), (2943, 6246), (3123, 5886)]