18898638

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 24439602

約数列:

[1, 2, 3, 6, 11, 22, 33, 37, 66, 71, 74, 109, 111, 142, 213, 218, 222, 327, 407, 426, 654, 781, 814, 1199, 1221, 1562, 2343, 2398, 2442, 2627, 3597, 4033, 4686, 5254, 7194, 7739, 7881, 8066, 12099, 15478, 15762, 23217, 24198, 28897, 44363, 46434, 57794, 85129, 86691, 88726, 133089, 170258, 173382, 255387, 266178, 286343, 510774, 572686, 859029, 1718058, 3149773, 6299546, 9449319, 18898638]

約数ペア:

[(1, 18898638), (2, 9449319), (3, 6299546), (6, 3149773), (11, 1718058), (22, 859029), (33, 572686), (37, 510774), (66, 286343), (71, 266178), (74, 255387), (109, 173382), (111, 170258), (142, 133089), (213, 88726), (218, 86691), (222, 85129), (327, 57794), (407, 46434), (426, 44363), (654, 28897), (781, 24198), (814, 23217), (1199, 15762), (1221, 15478), (1562, 12099), (2343, 8066), (2398, 7881), (2442, 7739), (2627, 7194), (3597, 5254), (4033, 4686)]