51138815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1583}}^1$

素因数の和:1679

約数の個数: 32

約数和(自身を含む): 76640256

約数和(自身を除く): 25501441

約数列:

[1, 5, 7, 13, 35, 65, 71, 91, 355, 455, 497, 923, 1583, 2485, 4615, 6461, 7915, 11081, 20579, 32305, 55405, 102895, 112393, 144053, 561965, 720265, 786751, 1461109, 3933755, 7305545, 10227763, 51138815]

約数ペア:

[(1, 51138815), (5, 10227763), (7, 7305545), (13, 3933755), (35, 1461109), (65, 786751), (71, 720265), (91, 561965), (355, 144053), (455, 112393), (497, 102895), (923, 55405), (1583, 32305), (2485, 20579), (4615, 11081), (6461, 7915)]