28015975

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:404

約数の個数: 36

約数和(自身を含む): 39711000

約数和(自身を除く): 11695025

約数列:

[1, 5, 13, 19, 25, 65, 95, 169, 247, 325, 349, 475, 845, 1235, 1745, 3211, 4225, 4537, 6175, 6631, 8725, 16055, 22685, 33155, 58981, 80275, 86203, 113425, 165775, 294905, 431015, 1120639, 1474525, 2155075, 5603195, 28015975]

約数ペア:

[(1, 28015975), (5, 5603195), (13, 2155075), (19, 1474525), (25, 1120639), (65, 431015), (95, 294905), (169, 165775), (247, 113425), (325, 86203), (349, 80275), (475, 58981), (845, 33155), (1235, 22685), (1745, 16055), (3211, 8725), (4225, 6631), (4537, 6175)]