18706919

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 6839833

約数列:

[1, 7, 11, 17, 31, 77, 119, 187, 217, 341, 461, 527, 1309, 2387, 3227, 3689, 5071, 5797, 7837, 14291, 35497, 40579, 54859, 86207, 100037, 157201, 242947, 603449, 1100407, 1700629, 2672417, 18706919]

約数ペア:

[(1, 18706919), (7, 2672417), (11, 1700629), (17, 1100407), (31, 603449), (77, 242947), (119, 157201), (187, 100037), (217, 86207), (341, 54859), (461, 40579), (527, 35497), (1309, 14291), (2387, 7837), (3227, 5797), (3689, 5071)]