22128925

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 34497792

約数和(自身を除く): 12368867

約数列:

[1, 5, 7, 13, 25, 35, 65, 71, 91, 137, 175, 325, 355, 455, 497, 685, 923, 959, 1775, 1781, 2275, 2485, 3425, 4615, 4795, 6461, 8905, 9727, 12425, 12467, 23075, 23975, 32305, 44525, 48635, 62335, 68089, 126451, 161525, 243175, 311675, 340445, 632255, 885157, 1702225, 3161275, 4425785, 22128925]

約数ペア:

[(1, 22128925), (5, 4425785), (7, 3161275), (13, 1702225), (25, 885157), (35, 632255), (65, 340445), (71, 311675), (91, 243175), (137, 161525), (175, 126451), (325, 68089), (355, 62335), (455, 48635), (497, 44525), (685, 32305), (923, 23975), (959, 23075), (1775, 12467), (1781, 12425), (2275, 9727), (2485, 8905), (3425, 6461), (4615, 4795)]