128735425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{797}}^1$

素因数の和:898

約数の個数: 48

約数和(自身を含む): 199487232

約数和(自身を除く): 70751807

約数列:

[1, 5, 7, 13, 25, 35, 65, 71, 91, 175, 325, 355, 455, 497, 797, 923, 1775, 2275, 2485, 3985, 4615, 5579, 6461, 10361, 12425, 19925, 23075, 27895, 32305, 51805, 56587, 72527, 139475, 161525, 259025, 282935, 362635, 396109, 735631, 1414675, 1813175, 1980545, 3678155, 5149417, 9902725, 18390775, 25747085, 128735425]

約数ペア:

[(1, 128735425), (5, 25747085), (7, 18390775), (13, 9902725), (25, 5149417), (35, 3678155), (65, 1980545), (71, 1813175), (91, 1414675), (175, 735631), (325, 396109), (355, 362635), (455, 282935), (497, 259025), (797, 161525), (923, 139475), (1775, 72527), (2275, 56587), (2485, 51805), (3985, 32305), (4615, 27895), (5579, 23075), (6461, 19925), (10361, 12425)]