81154136

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20411}}^1$

素因数の和:20495

約数の個数: 32

約数和(自身を含む): 176359680

約数和(自身を除く): 95205544

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 20411, 40822, 81644, 142877, 163288, 285754, 571508, 1143016, 1449181, 2898362, 5796724, 10144267, 11593448, 20288534, 40577068, 81154136]

約数ペア:

[(1, 81154136), (2, 40577068), (4, 20288534), (7, 11593448), (8, 10144267), (14, 5796724), (28, 2898362), (56, 1449181), (71, 1143016), (142, 571508), (284, 285754), (497, 163288), (568, 142877), (994, 81644), (1988, 40822), (3976, 20411)]