18279945

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 34467840

約数和(自身を除く): 16187895

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 47, 67, 129, 135, 141, 201, 215, 235, 335, 387, 423, 603, 645, 705, 1005, 1161, 1269, 1809, 1935, 2021, 2115, 2881, 3015, 3149, 5805, 6063, 6345, 8643, 9045, 9447, 10105, 14405, 15745, 18189, 25929, 28341, 30315, 43215, 47235, 54567, 77787, 85023, 90945, 129645, 135407, 141705, 272835, 388935, 406221, 425115, 677035, 1218663, 2031105, 3655989, 6093315, 18279945]

約数ペア:

[(1, 18279945), (3, 6093315), (5, 3655989), (9, 2031105), (15, 1218663), (27, 677035), (43, 425115), (45, 406221), (47, 388935), (67, 272835), (129, 141705), (135, 135407), (141, 129645), (201, 90945), (215, 85023), (235, 77787), (335, 54567), (387, 47235), (423, 43215), (603, 30315), (645, 28341), (705, 25929), (1005, 18189), (1161, 15745), (1269, 14405), (1809, 10105), (1935, 9447), (2021, 9045), (2115, 8643), (2881, 6345), (3015, 6063), (3149, 5805)]