25520145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{29}}^2$

素因数の和:107

約数の個数: 72

約数和(自身を含む): 51340224

約数和(自身を除く): 25820079

約数列:

[1, 3, 5, 7, 15, 17, 21, 29, 35, 51, 85, 87, 105, 119, 145, 203, 255, 289, 357, 435, 493, 595, 609, 841, 867, 1015, 1445, 1479, 1785, 2023, 2465, 2523, 3045, 3451, 4205, 4335, 5887, 6069, 7395, 8381, 10115, 10353, 12615, 14297, 17255, 17661, 25143, 29435, 30345, 41905, 42891, 51765, 58667, 71485, 88305, 100079, 125715, 176001, 214455, 243049, 293335, 300237, 500395, 729147, 880005, 1215245, 1501185, 1701343, 3645735, 5104029, 8506715, 25520145]

約数ペア:

[(1, 25520145), (3, 8506715), (5, 5104029), (7, 3645735), (15, 1701343), (17, 1501185), (21, 1215245), (29, 880005), (35, 729147), (51, 500395), (85, 300237), (87, 293335), (105, 243049), (119, 214455), (145, 176001), (203, 125715), (255, 100079), (289, 88305), (357, 71485), (435, 58667), (493, 51765), (595, 42891), (609, 41905), (841, 30345), (867, 29435), (1015, 25143), (1445, 17661), (1479, 17255), (1785, 14297), (2023, 12615), (2465, 10353), (2523, 10115), (3045, 8381), (3451, 7395), (4205, 6069), (4335, 5887)]