28253225

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1129}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 47080320

約数和(自身を除く): 18827095

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 143, 175, 275, 325, 385, 455, 715, 1001, 1129, 1925, 2275, 3575, 5005, 5645, 7903, 12419, 14677, 25025, 28225, 39515, 62095, 73385, 86933, 102739, 161447, 197575, 310475, 366925, 434665, 513695, 807235, 1130129, 2173325, 2568475, 4036175, 5650645, 28253225]

約数ペア:

[(1, 28253225), (5, 5650645), (7, 4036175), (11, 2568475), (13, 2173325), (25, 1130129), (35, 807235), (55, 513695), (65, 434665), (77, 366925), (91, 310475), (143, 197575), (175, 161447), (275, 102739), (325, 86933), (385, 73385), (455, 62095), (715, 39515), (1001, 28225), (1129, 25025), (1925, 14677), (2275, 12419), (3575, 7903), (5005, 5645)]