18746728

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2341}}^1$

素因数の和:2378

約数の個数: 64

約数和(自身を含む): 47214720

約数和(自身を除く): 28467992

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 182, 286, 308, 364, 572, 616, 728, 1001, 1144, 2002, 2341, 4004, 4682, 8008, 9364, 16387, 18728, 25751, 30433, 32774, 51502, 60866, 65548, 103004, 121732, 131096, 180257, 206008, 213031, 243464, 334763, 360514, 426062, 669526, 721028, 852124, 1339052, 1442056, 1704248, 2343341, 2678104, 4686682, 9373364, 18746728]

約数ペア:

[(1, 18746728), (2, 9373364), (4, 4686682), (7, 2678104), (8, 2343341), (11, 1704248), (13, 1442056), (14, 1339052), (22, 852124), (26, 721028), (28, 669526), (44, 426062), (52, 360514), (56, 334763), (77, 243464), (88, 213031), (91, 206008), (104, 180257), (143, 131096), (154, 121732), (182, 103004), (286, 65548), (308, 60866), (364, 51502), (572, 32774), (616, 30433), (728, 25751), (1001, 18728), (1144, 16387), (2002, 9364), (2341, 8008), (4004, 4682)]