18708651

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:297

約数の個数: 40

約数和(自身を含む): 30559760

約数和(自身を除く): 11851109

約数列:

[1, 3, 9, 13, 27, 39, 81, 109, 117, 163, 327, 351, 489, 981, 1053, 1417, 1467, 2119, 2943, 4251, 4401, 6357, 8829, 12753, 13203, 17767, 19071, 38259, 53301, 57213, 114777, 159903, 171639, 230971, 479709, 692913, 1439127, 2078739, 6236217, 18708651]

約数ペア:

[(1, 18708651), (3, 6236217), (9, 2078739), (13, 1439127), (27, 692913), (39, 479709), (81, 230971), (109, 171639), (117, 159903), (163, 114777), (327, 57213), (351, 53301), (489, 38259), (981, 19071), (1053, 17767), (1417, 13203), (1467, 12753), (2119, 8829), (2943, 6357), (4251, 4401)]