18943794

素因数分解:

$2^1\times 3^7\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 64

約数和(自身を含む): 43925760

約数和(自身を除く): 24981966

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 71, 81, 122, 142, 162, 183, 213, 243, 366, 426, 486, 549, 639, 729, 1098, 1278, 1458, 1647, 1917, 2187, 3294, 3834, 4331, 4374, 4941, 5751, 8662, 9882, 11502, 12993, 14823, 17253, 25986, 29646, 34506, 38979, 44469, 51759, 77958, 88938, 103518, 116937, 133407, 155277, 233874, 266814, 310554, 350811, 701622, 1052433, 2104866, 3157299, 6314598, 9471897, 18943794]

約数ペア:

[(1, 18943794), (2, 9471897), (3, 6314598), (6, 3157299), (9, 2104866), (18, 1052433), (27, 701622), (54, 350811), (61, 310554), (71, 266814), (81, 233874), (122, 155277), (142, 133407), (162, 116937), (183, 103518), (213, 88938), (243, 77958), (366, 51759), (426, 44469), (486, 38979), (549, 34506), (639, 29646), (729, 25986), (1098, 17253), (1278, 14823), (1458, 12993), (1647, 11502), (1917, 9882), (2187, 8662), (3294, 5751), (3834, 4941), (4331, 4374)]