18904669

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{1553}}^1$

素因数の和:1644

約数の個数: 16

約数和(自身を含む): 22675968

約数和(自身を除く): 3771299

約数列:

[1, 7, 37, 47, 259, 329, 1553, 1739, 10871, 12173, 57461, 72991, 402227, 510937, 2700667, 18904669]

約数ペア:

[(1, 18904669), (7, 2700667), (37, 510937), (47, 402227), (259, 72991), (329, 57461), (1553, 12173), (1739, 10871)]