128520825

素因数分解:

$3^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 217890816

約数和(自身を除く): 89369991

約数列:

[1, 3, 5, 15, 25, 75, 103, 127, 131, 309, 381, 393, 515, 635, 655, 1545, 1905, 1965, 2575, 3175, 3275, 7725, 9525, 9825, 13081, 13493, 16637, 39243, 40479, 49911, 65405, 67465, 83185, 196215, 202395, 249555, 327025, 337325, 415925, 981075, 1011975, 1247775, 1713611, 5140833, 8568055, 25704165, 42840275, 128520825]

約数ペア:

[(1, 128520825), (3, 42840275), (5, 25704165), (15, 8568055), (25, 5140833), (75, 1713611), (103, 1247775), (127, 1011975), (131, 981075), (309, 415925), (381, 337325), (393, 327025), (515, 249555), (635, 202395), (655, 196215), (1545, 83185), (1905, 67465), (1965, 65405), (2575, 49911), (3175, 40479), (3275, 39243), (7725, 16637), (9525, 13493), (9825, 13081)]