18830357

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:178

約数の個数: 32

約数和(自身を含む): 24460800

約数和(自身を除く): 5630443

約数列:

[1, 7, 13, 41, 49, 91, 103, 287, 343, 533, 637, 721, 1339, 2009, 3731, 4223, 4459, 5047, 9373, 14063, 26117, 29561, 35329, 54899, 65611, 182819, 206927, 384293, 459277, 1448489, 2690051, 18830357]

約数ペア:

[(1, 18830357), (7, 2690051), (13, 1448489), (41, 459277), (49, 384293), (91, 206927), (103, 182819), (287, 65611), (343, 54899), (533, 35329), (637, 29561), (721, 26117), (1339, 14063), (2009, 9373), (3731, 5047), (4223, 4459)]