217129825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{4091}}^1$

素因数の和:4305

約数の個数: 24

約数和(自身を含む): 295311456

約数和(自身を除く): 78181631

約数列:

[1, 5, 11, 25, 55, 193, 275, 965, 2123, 4091, 4825, 10615, 20455, 45001, 53075, 102275, 225005, 789563, 1125025, 3947815, 8685193, 19739075, 43425965, 217129825]

約数ペア:

[(1, 217129825), (5, 43425965), (11, 19739075), (25, 8685193), (55, 3947815), (193, 1125025), (275, 789563), (965, 225005), (2123, 102275), (4091, 53075), (4825, 45001), (10615, 20455)]